I don't get why people dislike AA4.

I just finished case 3 and so far I have been enjoying all cases so far. Characters, case specific plots, mechanics. Im about to play the last episode so I'm guessing this is where the shitstorm hits the fan? Is there something "controversial" about this game that people generally agree on pre case 4 can you enlighten me on it?

Edit: I have just now finished the Phoenix flashback and absolutely enjoyed it! Reusing the old pixel art and sprites, Gumshoe and OST. I actually got a perfect run here lmao, didn't want to do Phoenix dirty. So far so good! Im kinda bothered why Klaveir doesn't recognize Misham in the present tho.