Interesting. To me Phase 4 has some excellent writing so far (WV, Loki, SC), the script of Black Widow is good... Even some episodes of FATWS are very well written. It's the direction that might improve, in fact. Although I loved Cretton work in SC.
To be honest I think COVID may have impacted the quality especially for the shows. Will see Eternals, based on the reactions so far, this will be my type of jam.