Reading mkb community forums for a long time I can tell that this is either self-assurance or blind eye. Switches and mkbds break all the time and some people tend to make/use quick replace whole-switch mounts, which then creates alignment issues etc.

I use three membrane chiclet keyboards since around 2018 that have no wear signs apart from plastic desaturation of a package.

There are good models and bad models, regardless of a type.

Can you name those durable models? I went through a lot of KV-300H because they felt nice, but don't live nearly as long as even a cheap mechanical: I grind through one in a year — by the end of which it looks like it was worked over with sandpaper, and some buttons stop registering key presses.