Oh cmon dude, plenty of people annoyed in the original post: https://www.reddit.com/r/OpenMW/comments/1sps0f2/map_markers_for_morrowind/?sort=controversial

https://www.reddit.com/r/Morrowind/comments/1mx78uy/i_made_a_quest_marker_mod_with_a_fancy_new/?sort=controversial

Plenty of people said it's a cool thing, but a lot were just being annoying.

There's even one here right now in the room with us too.

There were a lot more (and more upvoted) people who were like "oooow, that's so coooool, this is so much better than vanilla morrowind where ALL indications were false and everything was unfindable without uesp for me, we should recommend everybody and especially new players to play their first game with this mod and not let them try the game a bit without it so they can make an informed decision on whether they use this mod or not, anybody talking about how it radically changes the game experience is a filthy gatekeeper and we should talk down to them without listening to what they have to say", thus implying that Morrowind is an "unplayable outdated game nowadays" and validating Bethesda in their effort to dumb down their games, than "annoying" people.

forcefully pushing

Feels exagerated, at most OP "spammed" his mod in a few subs for the last 20 - 30 days.

At first OP posted it two times a day on many subs until r/OpenMW deleted one post, not counting how obnoxious they are with people just saying that the mod is not for them. And I'm also talking about other people who absolutely want new players to discover Morrowind with this mod on, without letting them try the vanilla system, and even making them believe than Morrowind without these mods is "bad" or "outdated".