It's not irritation at it being popular, it's irritation at the bombardment specifically, the direct of it. A lot of the folks who skipped out on Undertale didn't do so because it was popular, they did so because lots of people personally bombarded them with "omg you haven't played you have to play", combined with the whole "you have to play it this way" thing too in particular. I think that last bit made it especially bad.

But mostly it's unsolicited pushing to Do Thing in a pushy, bombarding fashion.

There's plenty of popular things I get excited about when I'm told by lots of folks about, or get intrigued by. It's just a specific flavor of bombardment that pushes people back.

Like one person who keeps quite literally yelling "hey Kay bake my ___ recipe!!!!" Like... The louder they get about it the less inclined I am to do that versus find something else to bake because the pushy behavior is off-putting.

Idk how this is even remotely the same thing as being contrarian other than ignoring the pushiness for specific situations.