That makes me extremely nervous. One can imagine a perverse mod who simply deletes comments based on which political subs they post in.
I personally don't care where you post if you're being polite on the sub I moderate. I try to think of it like being the chairperson of a meeting, or the bartender at a local bar: Let people debate and disagree and even say stupid stuff, but if they say something obviously offensive or start name-calling, you get modded.
And if I then look at your comment history and see a stream of vitriolic behavior, that shows me it wasn't "just one time" you got out of hand, but a pattern of undesirable behavior.
I do know other subs, mostly political, that will instantly ban you if you have a different set of beliefs than they do. It's very frustrating. But that's not what I'm discussing here.
However, different subs run differently. I may well engage in a nuanced and sourced debate in one subreddit, and frankly tell someone off in another. Subreddits are communities and communities have different standards of behavior.
Likewise, community membership is a terrible proxy for actual opinions or beliefs. I belong to many communities I disagree with, but I find monitoring them to be useful and sometimes engage in debates. I've found my debates with anti-vaxxers to be very enlightening - I still think people should get vaxxed but I understand my opposition.
All of this to say that a top down examination of a profile without context is worse than useless - it is actively misleading.
Have a public moderation log.
Reddit is unfortunately woefully under-equipped for moderators so the above is a strictly out of band process for Reddit specifically.
I volunteered when I thought the mods did a poor job on something and DM'ed them, and one invited me to help.
So every day or three, I hop on and help clean out the report queue if it's stacked up.
Being a decent person, modding can be difficult because the internet is full of bad-faith people and idiots. Applying a consistent standard in a way that keeps the sub clean while allowing real conversation is tough, so it is a lot of judgement calls.
I could go on, but it is a tough job. I do it because I want the "chatroom of the city" to be as friendly as possible. I tend to let "merely stupid" comments get downvoted to oblivion, but name-calling or straight-up disinfo (I tend to look at their profiles for context) gets deleted quickly.
And yeah, I step away from it a few days a week, simply because caring too much will keep you steeped in horrible comments and stupidity far too much.