Also, I am not sure that the ram or storage won't become limiting within these 10 years, e.g. media is only getting larger (120GB+ for baldur's gate 3), LLMs,... . On a non-mac you can simply grab a 2TB ssd for like $100 and in 8 years can probably replace it with like 8 or 16TB for about the same price.

Again, perfectly nice, quiet, fast machine with a decent display, but soldered stuff sucks. If that were not the case, I would consider upgrading to it from my current 5 year old machine (also 14" 2k HDR ips screen, 16GB ram and above mentioned 2TB ssd upgrade). However, paying 2000€ just to match the ram and storage of my 5 year old laptop is definitely off-putting and you also don't get OS upgrades for the full 10 years, right?