No one tells you to have the facade newly insulated in an existing building. So that's nonsense to begin with.
That's clear; although I really hope that existing buildings won't have to be retrofitted someday. I just wanted to say that such full thermal insulation doesn't last forever and sometimes has to be replaced after a relatively short time. More waste and above all more costs.
And no, it cannot be that you regularly light an open fire in your house and thus burden the whole environment and the climate. Environmental protection is a good that must be provided by the state, otherwise everyone would only think of themselves like you and act to the detriment of the earth. The fact that the state itself still has to learn and maybe makes pointless regulations is something that needs to be worked on. Fortunately, the next generation seems to be fitter in this regard and becoming better.
Honestly, I don't think much of the protests either. Not all, but quite a good number of these students probably just want a free morning off. Peer pressure plays a role here too – if you don't join, you're out of favor with your classmates. But not all students who participate really engage with the topic. I happened to come across such a protest a few weeks ago and I can confirm what is said about it (probably also at regulars' tables...): The kids there eagerly used cardboard and plastic cups, single-use PET bottles, and almost everyone had a smartphone in their hand. Are they really participating out of true conviction? I find it a pity for those who really want to make a difference. Here's some dinner table chatter again, but: Can't the protests be on Saturday mornings? Or Friday afternoons? Or Monday afternoons? Even then, with enough demonstrators, a sign could be set over time.