We used to do more with less because devs were forced to optimize but now compute, storage, and data is cheap, and abundant (at least relative to history, although recently we've seen an uptick in costs).

It's like cave diving vs running around in a park.

Most people aren't going to impose extreme limitations on themselves when they have lots of space.

But I do agree with your point, some devs do neglect people running outdated software, and hardware.