There may be an age or generational explanation for this, but I especially notice this behavior on Reddit while not nearly as much here on Lemmy (though maybe that’s also a mater of implementation).
It seems many are so quick to assert overly-confident positions, but then hit-and-run with some smarmy remark at even the slightest challenge, then quickly block. Like, not even crazy stuff. Just basic, civil disagreements. I can pretty well predict when it will happen, and it always feels like such a petty ego-sparing fingers-in-ears denial thing to do, and to me if anything shows they were not very confident in their views being challenged.
I think I’ve only blocked a handful of people over a decade who were actively spamming, stalking, or spewing extremely hateful rhetoric and I just reported them simultaneously. You have to cross a pretty extreme and irrational line for me to do that.
The reason I ask is to see if I’m missing something; to better understand the mindset of those who do.
Personally, I block people who espouse things I believe are genuinely spiteful, hateful, or shitty. Generally, I use the block button to “curate” my experience with the intention that I can use Lemmy as brief escapism when I’m in the bathroom or on the train without having my mood affected by somebody posting something shitty.
I don’t block anyone for normal disagreements, because I’m a relatively normal adult and as such that sort of thing doesn’t bother me.