sounds the biggest issue here is people seem to be willing to have MSE on board (resident or not) at all cost, just because it's a Microsoft product, and they feel it should belong to a Windows install, just like Defender did...extremely subjective
The other thing is that MSE is good (from misc reviews and tests), and people forget that even if it's good, even if it's an MS product, they should make a choice and not have two AV installed, and also stop hiding their "concerns" behind the pretext of layered security