Lonely people whose lives are truly empty and who are circling the drain of personal oblivion crave ACKNOWLEDGEMENT that they possess any power at all to gain the notice of others.
Their failure to be personable and engaging leaves them in a poisonous and prickly state of mind.
It is far easier for them to snarl invective and bask in the attention as they feed on the negative energy as an empowerment.
Really, simply ignoring them pricks their fragile bubble of provocative infamy quite efficiently!
Try it.