I'm not anti-vax, but this is a discussion on toxicity on the internet, and I see plenty of people who take great pleasure in just unloading on anti-vaxxers because they know it's a target nobody will scold them for being cruel to. It's pretty obvious these types don't really care about changing the minds of the anti-vaxxers either, people usually don't have an epiphany about their life just because somebody was mean to them online. If anything, it's an opportunity for anti-vaxxers to band together against people who are cruel to them and probably even more deeply ingrain their beliefs.

This doesn't mean anti-vaxxers should be tolerated as a viable alternative lifestyle, but throwing curses at them online and spamming memes that make them out to be mentally challenged really doesn't do anything but satisfy a bully.