I don't see this in pools. 3m spring boards are still pretty common at pools in the US. My "nothing special" high school had 3m springs.

It's true that the 5m,7m,10m platforms are usually only found in sportsplex-type pools. They typically come as a package. But as you mentioned in an earlier comment, 5m+ starts the get actually dangerous. Flopping from 10m or even 7m without an agitator can do serious permanent damage. IMO a platform tower above 3m (or maybe 5m) is more "expensive sports equipment" than "general public recreational equipment".

I maybe could see a 5m platform as "general public recreational equipment", but 7 and 10 are definitely not. And there are just better ways to use time/money than building a 5m platform when you already have 3m spring boards.

American pools are moving away from exercise and toward recreation/amusement (i.e., switching out swimming lanes for "water playgrounds" and switching out diving boards for water slides). But that's a totally different phenomenon from "bubble wrap culture"; IMO those water playgrounds are way more dangerous than traditional pools (I've seen more than one kid injure themselves pretty seriously jumping off of the water playground into ~2ft water; that would never happen in a lane-swimming pool). And personally, I've had more injuries on water slides than on 1m or 3m spring boards.

So there's something annoying going on with American swimming pools, but it's not bubble wrap culture.