The r/writing subreddit Principle states that if your question starts with the words "Is it ok" or something similar to that then the answer is invariably yes.
"Hello, r/writing. Can I use a particular gimmick or a plot device that has been used before but because I don't actually read books or do any research I just assume it to be a highly original idea?"
Subreddits should only be linked in reddit. It's very cringy to do it outside of reddit. You'll see this very often on Youtube comment sections anyway due to the upsurge of dumbass YouTubers narrating various subreddits, with their main audience being kids who have never actually been on Reddit before.
When I see people act this way I reply with "r/thisisntreddit"
A man (sometimes bearded) who drives a Subaru and wears all outdoor gear with no intension of ever doing any outdoor activities. This Subadouche can be easily spotted disturbing the flow of traffic and driving under the speed limit for optimal gas mileage.
Great! I'm stuck behind another Subadouche with an opinionated bumper sticker and kayaks on the roof with the tags still on them.