If you mean people who are upset that they have to buy a whole head or ship their machine back for what seems like a minor issue, yeah you’re not alone.
As for the magnet lens thing, like @eflyguy I have never heard of this happening to anyone else.
I know you may not have been looking for solutions here, most likely you’re trying to vent (which benefits no one) or complain loudly enough that GF will capitulate (which benefits you but at our expense). Anyway, there are options you could try if that’s what you’re wanting.
Have you tried to source your own magnet? I’d probably have gone looking for one if I were in your shoes. If it’s truly as simple as that, it seems like a pretty easy fix. Glowforge doesn’t make the magnets, so it’s just a matter of finding a supplier with a similar one.
Might be worth a shot?