I don't understand the hate for S6 & S7.

I'm not done with the show yet (on 07x01), but I wanted to see people's ranking on the show without spoiling myself, and I saw the last two seasons on the very last places.

Reading a bit about why I seen websites critizing the lack of "lighthearted" scenes in the last seasons, but I don't understand why this such a problem. Sure, the show had a more lightheart tone at the start, but It was never the focal point. Not only that, but there are countless TV shows out there that also had this kind of evolution over its course.

Breaking Bad, for example, started its first season with a lot of wacky scenes and shenaningans remeniscing Bryan Cranston's previous role in Malcolm in the Middle. However, it's nothing new to say that the show became incredibly bleak and grim by the last season, but you don't see no one saying "Seasons 4 and 5 of Breaking Bad are bad because they are no longer funny." Same with The Sopranos, Red Dead Redemption 2 (even if It isn't a TV show It is greatly beloved despite becoming much more depressing in its last chapters), and even The Shield, the previous show the creator worked on and which's finale is widely regarded as one of TV show's finest endings.

So why is this such a problem with Sons of Anarchy? I don't think anyone came to the show thinking it'd have a happy ending, considering all the heavy themes the show dealt with since season one. Also I'm pretty sure it's a deliberate move, to make you miss the "good times" seeing how much the club has worsen and how many lives It has destroyed over the past seasons. I can understand other problems people can have with the final seasons, but this one I don't understand.