Back in Dember 2016, there were over 10 threads about that in that month alone.
I was against ender pearls in normal back then, since I had encountered multiple occasions where it turned into a constant teleporting chase. There was this game: There was a single guy without an egg, and I didn't have an egg either. I decide to go to his base as fast as possible since he was camping, so I go for a single pearl & go to him from mid. I was hoping that he wouldn't be too geared up, that's why I was rushing the pearl. As soon as I pearled to him, we got into a fight that lasted maybe 5 minutes, and he decided to pearl to mid. His generator was a level 2, while mid had 2 level 3's. It sucks since you really need to hurry before things like this happen, but when it happens, it's a pain to overcome it. In the end, it was a chase that lasted ~5 pearls, where I had to stock up three times. The last time I just went for 3 pearls to see if I needed them, and I was lucky he only had 3 himself.
It's these chases that are worse than camping that can make people hate ender pearls if used in an annoying way.