Conversely, I donβt see any downside to it. If it's added and you don't like it, then just don't use the setting. It doesn't affect you. Other lemmy apps have this setting and anyone who wants to use it uses it. No real reason for it not to be added.
I prefer not to see karma scores, not on my profile or any other. Karma ruined reddit for me with the karma rat race that caused so many low effort posts and comments. And no, I'm not going to just never go to user profiles on account of this. If profiles weren't meant to be accessible, then they wouldn't be publicly visible at all.