It seems that Second Thought (and their second channel, First Thought) has been silently removed from Nebula, with no comment from them or anyone on Nebula’s side.
There’s some context in the comments of a couple of reddit threads about this, that have been deleted on the Nebula subreddit:
https://www.reddit.com/r/Nebula/comments/17be8bf/second_thoughts_channel_being_removed_from_nebula/
https://www.reddit.com/r/Nebula/comments/17bav9j/what_happened_to_firstsecond_thought/
The guy said that Hamas is fine because he doesn’t think there are any Israeli civilians. Something even Hamas disagrees with. When he refers to “both sides” here, he means that he doesn’t agree both sides have human beings getting hurt.