My own (anecdotal) experience tells me that increased social media use is directly proportional to increased bad feelings. Common sense tells me that increased bad feelings over time leads to bigger, worse bad feelings.
My experience agrees with you. At the very least, I had no idea how many of the people I grew up with were as stupid, shallow and bigoted as they are until I heard them announce their opinions on social media. I may not have hung out with many of them after high school, but at least I still sort of had some respect for them.
