Personally, yes, it does.
To see people day in and day out try and justify a genocide does affect my mental health so I try to stay away at times.
I have also noticed it is the same handful of posters on both sides arguing, neither convincing the other.
I have unfortunately witnessed at times anti-semitic and anti-Palestinian comments, which are not pleasant to read.
Does it affect you? It is not always a pleasant place whatever your stance is on the conflict.