Well its a known fact that people behind a keyboard are going to type things they would never say face to face... Are any of those people your friend in real life outside the group??
Maybe you need to consider if you want to stay part of that online group... Im sure there are plenty of others you can join.
Yes its terrible that people felt the need to become angry at you because you voiced your concerns.. Some times there are just sucky humans roaming the earth.
You just have to decide which battle you want to spend your energy on.. In the grand scheme things right now with a world wide crisis Does it really matter that some fools online yelled at you online???