Wild Horse: It depends. Reddit traffic tends to be bouncy, so it's not of the best quality, but you will eventually score readers if you persevere.
If the general Reddit population likes your material, you can post cat poop every day and they won't care. If there's a few trolls that hate your work or someone who feels you're a spammer, it can backfire. It is best to rotate the subreddits where you post to avoid the worst problems. Do not post all of your comics every single day on any given subreddit. Throw in new articles and videos you find for variety on appropriate subreddits. Post comics outside of the regular subreddits when appropriate for maximum reach.
Here's the skinny on the subreddits that are comics specific: r/comic_crits subreddit is the kindest, but be sure to ask for a genuine critique. On /r/comics people tend to get into moods where they either ignore your comic or check it thoroughly. /r/webcomics is absolutely merciless with down votes, trolls and the mods are stringent about their rules, but if you post something they like, the traffic will be insane. One-shot humor webcomics usually get the best reaction. There is an /r/graphicnovel thread for serial non-funnies.
I hope this helps.