And no, the issue isn't "I like to casually play with off-the-wall builds." The issue is "video games were a lot more fun when you encountered different types of opponents."
This is, of course, why game designers put so much work into supporting variations in builds, so obviously they agree too.
I didn't criticize anyone for being less skilled or anyone for being "in the wrong." I'm observing a game dynamic that makes games less variable than their designers clearly intend.
If you don't like it that's fine - I'm actually mostly in agreement with you. But I don't think it's necessarily a flaw in the game any more than chess openers are necessarily a flaw with chess (although chess960 does exist so clearly not everyone appreciates the typical openers).