"Apparently" you're misinformed. The brand with build quality issues for years is Mercedes, not BMW, in case you weren't aware and they're now addressing those problems.Apparently the new iX3 seems to be beaten by GLC EQ in build quality already, See where this is going?
The build quality of the iX3 isn't in question; on the contrary, it's been praised by members of this forum who have sat in it, and by testers in general. "Apparently," it seems you don't even know what "build quality" means.