Of my last 4 fs frames…
First one 04 s works enduro (super bike at the time in alu) skipped after 6 years due to chain stays snapping
07 heckler cable rub and wheel rub skipped that one back in 11
09 heckler made it until 2014 before snapping.
My blur ltc is happy as day 1 with 3 years hard riding under its belt. By the time I change I’ll probably just keep the frame.
I think despite the nay sayers not as many get sold as you think, lots of those go to people who ride a lot. Many are not serial frame swappers. There are plenty of companies coming in with some excellent value bikes these days, across a lot of models/brands there is a stand out entry bike that is great value. Yes prices have risen from the 90s but so have quality and things like working suspension.
Plenty of good value ht builds around if you want to to go like for like.