This is a both sides suck here for me.
I read a few of the reddit threads and there were legitimate criticisms that the follower started out cringey and edgy but a lore-friendly bratty elf and then after some big update the follower was turned into an over-the-top melodramatic edgy super evil non-lore-friendly entity (vampire demon dragon princess from another reality that is more powerful than any of the gods of TES) who now had a boyfriend equally evil with many voice lines about how much the two of them were horny for each other, and like to burn down inns full of people for fun.
There were some cringey guys upset they were being cucked, too many gamers in general are obsessed about the possibility of being cucked by some pixels and are ridiculously fragile about it.
But the mod author lashed out at both the trolls and people caught in the crossfire, the community became more upset, just an angry cycle. People asked about being able to download the old version before the changes since the mod author hid the older version - Nexus doesn't allow mod authors to delete their work anymore so people's mod lists don't break but they for some stupid reason allow mod authors to hide older versions from users which can only be accessed by having the right link and it is a pain to get. Eventually the mod author releases the older version again as its own mod. But at this point the community hates them because of an image showing someome on the mod author's discord talking about doxxing anyone who upset the mod author which the author offered gleeful support of.
There was a guy in the thread (ZootAllures9111) who said he helped develop and code the mod (you quoted him in your comment) and he said that practically all criticisms were trolls from kiwifarms, and that the person who wanted to doxx others on the discord was just being silly and edgy and only disingenuous people would take their silly edginess at face value. Also that they won't play "this game with you" when asked how the mod author responded to this person wanting to doxx people because (CW:transphobia) the only image you need to look at is some random troll on a website called kiwifarms complaining about being a third wheel to two horny NPCs in the mod and something about being a cuck and that other followers don't need sex to sell basically. Then when someone in the reddit thread asks why they keep posting and deleting their same comment with someone else chiming in confirming they also noticed this, the guy offers a reasonable explanation about network issues and then says, "I remember you from the comment sections of our mods now by the way, you are exactly as disingenous as I thought yesterday and you're not gonna get anywhere pretending otherwise." Which the innocent guy replies, "You should maybe take a break because you’re getting paranoid now. I’ve never used your mod, have no intention to, and the first time I’ve heard of all this drama was when this thread came up."
Why mention this? Because I think it is shitty to "joke" about doxxing people and defend this "joking" and call everyone speaking out a troll from kiwifarm and I can see why the community doesn't like the direction the author took and how annoying it is to not be able to go back to an older version of the mod. And I've read the threads, they were not overwhelmed with trolls unless you think people who criticize a mod author are always trolls. But I also think it is shitty and unacceptable how much harassment the author got. They are not the first author to get harassed off of Skyrim modding, even Vilja's author was chased off for IMO stupid reasons. The Skyrim modding community is full of assholes, both mod authors and users alike. It used to be routine how many mod authors would lose their shit and delete their mods.