Yes don't get me wrong, I know some people just have different tastes and I fully see how Frieren is not for everyone.
But sometimes I see people calling it straight up garbage and I just have no idea what those people would consider a "decent" anime then. Even if you don't like the story or way the story is told I don't know how people can deny that it's just beautifully animated. The OST is also pretty good in my opinion. Haters will be haters I guess.
Maybe it's because I also enjoy just some silly slice of life anime that I don't find the slow progress of the story annoying at all. I love all those small interactions and flashbacks with the characters but I can see how some people might find that boring.
I still don't understand how people could call Frieren a bad show from an objective kind of view - if they really rated it objectively.
I see Violet Evergarden also named all the time, calling Frieren a copy of it. I guess I will check it out and see where those peoples complains come from. I am a pretty "positive" viewer I would say, I only call out something as bad if I REALLY think there are problems else I can always see the positive side and appeal for certain audiences. So I imagine I will like Violet Evergarden as well.