Most of it has nothing to do with the function of the optic, more to do with things like small dust particles that work their way into view over years of hard use.
That is very much different then a ton of top tier scopes unable to track or hold zero.
The dust/grease thing can happen to any optic, it has happened to tangent thetas here.
Then there are the people that send it in and buy new turrets/reticles.
That and about 2019-2020 S&B got a bad lot of grease that would work its way into view overtime with use, it didn’t impact the functionality of the optic it was just annoying, so just send it in and they would replace the grease for you.