I didn't like Doom 2016, once you got the SS it was press LMB to win. I can respect it for what it did, but it was one playthrough and done.
I legit do NOT get the hate for Eternal. It's hard only for people who refuse to learn the rules and play it like 2016. The only thing I'd complain about is that it relied a bit too heavily on cooldown shit, but the speed, movement and weapons, monsters were fucking locked in. Still easily my #1 of the decade, ex aequo with DMC V. Anyone who complains it's too hard - skill issue, try playing the game properly.
I didn't play TDA, and have no interest in it. Gameplay wise it's just not interesting to me. I get that they were trying something new, and it just didn't work.
As for the lore - in both 2016 and Eternal you could skip every cutscene and just straight up ignore the lore. I liked it, but it wasn't hamfisted like every other goddamn game on the market. I saw that in TBA they did go full Marvelslop, but I enjoyed what I saw in 2016 and Eternal.
All in all I don't get the hate for the studio. At least they didn't just copy paste every new entry, and didn't switch to Unreal - the games run on potato hardware and manage to look gorgeous. That deserves respect in my eyes