Why? The worst that will happen is you get downvoted.
I've also run into subreddits run by very biased moderators who will mark any stories as spam they disagree or competes with their friends. And due to the shadowban system, many people never realize it.
That's why I stopped submitting comments and stories on reddit. I only browse it now.
In the subs I mod I have a long list of awful contributors on an auto-remove list executed by automoderator. I've got people who have been saying awful thing to people for years, but those posts are never seen. Banning them will only lead them to create a new account.