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.