The discussion is about price, not cost. Lego is keeping the price per piece somewhat stable because they know people look at that, but as pieces get smaller (and thus cost less to make), their margins go up, and sets get smaller for the same price.
The set that started this subthread is very much an outlier in that regard. Usually it looks like this: https://www.reddit.com/r/legostarwars/comments/1lpuz4d/lego_...
It has almost 4 times the number of pieces, but is only about 50% longer and wider - there's just way more smaller pieces. Price per piece is very misleading when comparing older and newer sets. The newer ones have more details, look slicker, but have a lot less "meat". Which is not that great for creative play.
> Never used coal power:
> Albania, Cyprus, Estonia, Latvia, Lithuania, Luxembourg, Malta, Switzerland, Norway
I very much doubt this is true for any of those countries. In fact, I know it is untrue for Switzerland, although they did stop using it long ago (mid 20th century).
Edit: Norway actually ran a coal power plant until 2023, on Spitsbergen