The point is that just because two things are used to avoid a third thing doesn't mean they're comparable when one of them is much less disruptive to those around you. There are people who don't think being forced into interactions because there didn't happen to be a way to decline without being considered rude is a better state that allowing people to opt out. Framing it as "both are examples of the same problem" is based on the (in my opinion flawed) premise that it's an objective problem in the first place rather than the previous social norm that was tilted towards extroverts now having more accomodations for those who aren't as extroverted.