Construction costs are currently skyrocketing

Sorry was curt throughout the day today... ~160sqm according to KFW55, we have central ventilation from Zehnder... The heating engineer said, if I understood him correctly, 6000kwh electricity for heating+hot water... That would probably be around 18000kwh of heat... The local heating (biogas waste heat) costs 9 cents/kwh until 2031 + 416€ basic charge... Operator is a private cooperative... in other words, maximally profit-oriented.

You will never ever consume 6000 kWh! I have a few sqm more, 5 people in the house, KFW55 with controlled residential ventilation, and including cooling in summer (via underfloor heating) we have just half the consumption.

Please inform yourself, for example, at the Federal Environment Agency, instead of spreading pub talk knowledge.

Maybe you should inform yourself at the Federal Environment Agency. The Federal Environment Agency contradicts your statements.

Where I do think, based on what quoted... There's definitely a bit of a vibe of "this really doesn't sound so cool." I read it somewhat as "here and there and somewhere else investigations were done and it was bad, but we just don't have many studies yet." So yes, a blanket "stop that!!!" isn't in the quotes, but neither is an "absolutely no problem" either. (Personally, I'm absolutely not a fan of the fireplace trend in recent years, but I'm also not a fan of pointing fingers, so whatever ;) )

Poisoning the neighbor's children and making it impossible to air out in the residential area is therefore okay? The thoughtlessness of some people is simply disgusting.

What is wrong with you? If old tires are burned in your neighborhood, I am sorry for you.
Our chimney neither smells nor produces smoke. Of course, it requires a clean combustion at high temperature.
You also cannot compare an old diesel from 1970 with a modern turbo diesel of today.

Price caps are not a permanent installation and here heat pump electricity costs 16-20 cents (off-peak/on-peak) and thus nowhere near a ceiling. Household electricity costs 30 cents.

But precisely because of this limited way of thinking, it is also good that gas is done with in new construction. In recent years I have experienced dozens of discussions here where similarly narrow-minded people proudly planned the great gas heating in new buildings. Now they are a burden on all of us. Perfect.

The price cap for electricity and gas is only temporary and at the turn of the year or by 2024 at the latest, the electricity exchange prices will also be passed on to all end customers, you will receive a letter about that too.
In the long term, it ultimately remains a "bet" whether the ratio of electricity price / gas price is greater or smaller than the annual performance factor of the heat pump, at least in terms of operating costs. Without the purely politically induced price increase in natural gas, the calculation would be positive for gas heating depending on connection conditions or at most comparable. What the future will bring? We'll see.

Regarding the electricity price, do not forget that there are now and in 2023 even more dramatic differences between north and south. While in northern Germany (SH, NS and MVP) massive investments were made in grids and connections for wind turbines, little has been done towards the south. The connection costs are now borne by the grid users in the north. Also, the surcharges due to lost profits of wind turbine operators because electricity cannot be delivered to the south are borne by the grid users in the north. And because of the increased electricity exchange price, these are enormous in 2023. This quickly adds up to a 7 ct / kWh price difference in grid charges between, for example, BW and SH.

The electricity price is only artificially high (was) due to excessive electricity production using gas (raw material expensive) and unfavorable effects in the electricity market (Merit Order principle, demand situation in France). Both are temporary problems. btw. check the prices of the electricity exchange. There is a reason why the media have not reported any records for months (!);-)

Gas will never be this cheap again because Russia will be out of the picture in the long term. The alternative is LNG, which costs many times more. There are good reasons why LNG has not been purchased so far; the Russians were simply massively cheaper. How much more expensive exactly it will become, we will still see, but don't expect to ever see gas under 10 cents per kWh again, rather more.

CO2 pricing does the rest. Even without the exceptional situation, gas prices would have tripled by 2030.