You brought up the 7th grade of secondary school.
Wait, I didn’t write anything on that topic, but more or less quoted you as the last post on the topic. Therefore, the really important addition ;) on the topic of wrong approaches is just the example "writing by ear" -> The method works perfectly. But what 95% of primary school teachers do is "You don’t have to pay attention to spelling." They simply haven’t learned this method properly because it isn’t particularly easy either. But as long as education policymakers believe they can save money with an inclusive education system, such discussions are pointless.
And so we don’t have to look for a room ;):
But back to the topic: For friends, the air heat pump failed after about 15 years. Repair by replacing the circuit board failed. Since they are an emergency, they will probably get a new air heat pump in February. An acquaintance who works at Stiebel Eltron reports something similar; the production capacities are absolutely exhausted. At this point, however, the issue of parts availability is not so relevant. They simply cannot keep up.