Well, I'll just say this and leave it at that: as far as I am concerned, Bioware (or any other RPG developer) couldn't possibly create a combat system worse than the BG3 combat system, and as such if BG3's combat system can be tolerated then so can DA4's system.
Yeah, as far as I'm concerned, they never made one even remotely as good, on the other hand. An even their best efforts (BG2) have been outside of the Dragon Age franchise, anyway.
And I say this even as someone who had PLENTY to criticize about BG3 (and Larian's way to design some aspects of their games in general) during three years of EA, as half of my forum history here proves.
Just because you have a hate-boner for turn-based tactics it doesn't mean it's objectively bad.