I think a lot can be blamed on heavy-handed spannerers. I know loads of folk who’ve stripped threads, rounded bolt heads, cracked bearing covers, etc. I’m now worried for them after reading this thread!
I know the recommended torque for a lot of stem bolts is 4-5Nm, which for those who don’t know, is not very much – barely hand-tight. I actually think a lot of folk are best using multi-tools on their bikes, as a lot of the long-handled allen key sets you see are a recipe for disaster in the wrong hands!
Edit: Pleased you’re OK, OP.