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?"
"According to the r/writing subreddit Principle, the answer is always yes. You can write whatever you want."
"But is it ok if, like, my main character dies in the end? I'm afraid the average reader will be put off by my creative genius."
"Yes! Stop asking other people for validation! Grow a backbone and write what you want!"
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"
Linking Subreddits outside of Reddit Youtube comments:
Person 1: Bro the 2013 Cat in the Hat is the best movie ever, it deserves to be the highest rated film
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.