It’s not part of the ranking algorithm, it’s part of the anti spam system. If you make a new account and comment, it’s almost never visible to anyone else.
You have to warm up accounts with a few comments over a week before they start showing up.
You have to warm up accounts with a few comments over a week before they start showing up.
Mods essentially have two variables to work with: account age and karma. Some subs do set minimum karma (I've stumbled upon some that wouldn't accept below 2k karma), but most just go by account age to prevent banned users from going around the ban.
And a tip for spotting karma farmers: just go to one of those big subs that accept screenshots of tweets. If the screenshot has engagements/timestamp cropped, click on a profile. Like 8 times out of 10 it's gonna be an older account that never posted before reposting one of the older popular submissions.
EDIT: Here's an example that took me like 20s to find: https://www.reddit.com/user/DepartureSimples/