Some of the most vitriolic, spiteful bile is from this lot. They're not even above commenting on people's looks and speculating on their personal lives.
The recent death of actress Anne Heche has brought them out in their droves of late. It is possible to have compassion for Anne in terms of the struggles she experienced, while also acknowledging the circumstances of her death (dangerous driving, being under the influence). She crashed into a house and destroyed it, and people are so quick to handwave the experience of the woman who lived in that house - "The insurance will cover it", as if the insurance can replace all personal possessions. This was a comment I made to such a thread - nothing else, just that the insurance won't cover everything - and I got "That woman has more compassion in her little finger than you have in your whole body". For saying that the insurance won't replace everything - I didn't say one word about Anne. Then more generally there are the usual generic inanities like "I suppose you're perfect" when nobody (except probably them) thinks they're perfect, and we're hardly talking about mere imperfection here. "I suppose you never made a mistake" - a mistake is locking yourself out, or leaving your concert ticket at home.
These people come across as kinda sociopathic. There's an incredible venom to them. The really aggressive "What about the homeless?" lot seem like they're not caring people at all. It's just a stick they use to beat with. "Don't judge" types are extremely judgemental.
It's purely performative, and it's absolutely toxic.