There can be more than one online tournament. There can be more than one online tournament on Untap.in, and there can be more than one Discord talking about them. You can promote your own event without tearing someone else's down.
Vintage is way too small for everyone not to be on each other's team.
But on a personal note ... some advice you can take or leave:
If you ever find yourself making the statement "I am not ___ist" near the statement "[I] was misunderstood"
Consider that communication is (at least) a two-person process. You were misunderstood, but did you really have no idea that was going to happen? Is there any way, before you made the statement you're defending, that you could have predicted how others might react?
When you speak, there are consequences to you and those who hear it ... and those consequences are the same regardless of your intention. Usually these consequences are not difficult to predict, and you KNOW they're going to happen, then you're complicit in those consequences, regardless of your intention.
This is not a site rule, but it's something I try to live by, and I might be biased but I've found it makes me a more likeable guy, appeals to the sort of people I actually have an interest in talking with, and helps me sleep at night.