Well, that's up to OP and deciding the direction they want to take with this thread. You yourself admit that the thread's original purpose is silly; all the outrage and the silly drama about "Oh it's like everybody around me has X-Ray eyes!" has only made any real issues related to mod-based harassment worse, because less people take them seriously.
Besides which, harassment is harassment is harassment. Instead of drawing the line in the sand on mods, why not a thread asking for stricter harassment responses, or better responses on harassment reporting? Because ingame chat, ingame emotes, ingame dungeons, ingame pvp, parsers, mods, and a whole host of other things are potential sources for harassment.
People mod for all sorts of reasons other than to make things "more real". They mod tails so that people can play as whatever animal race they want. They mod outfits to fit their particular taste in clothing and apparel design. They mod weapons because there are particular things about a weapon they'd like changed.
The other thing is, I consider there to be a large difference between telling someone "It's just pixels" when they're actually afraid of their character being seen naked, and telling someone "It's just pixels" when they take a mod to "dye" something that in game is undyeable.
Probably the smartest thing anyone can do regarding this tbh. While I have a different outlook on things than you, perhaps because as a MCH I see a different view of my character and their weapon than everyone else in the game anyway (Gauss Barrel is off), I respect that you feel differently about it.I'm really attached to my character and I prefer that people see her the same way I do and the idea of people using mods and altering that is not something I like. But since there is nothing I can do about I just going to move on with my life.