There’s a difference between a Live Service Game that receives regular updates that are reasonably tested and decently polished, versus a Live Service Game that receives regular updates that are insufficiently tested and exhibits a glaring lack of attention to detail.
I think most players will acknowledge that this patch, and arguably this expansion, does not exhibit the commercial quality that Blizzard have shown themselves capable of delivering in the past, i.e. the infamous “Blizzard polish”.