Well, still even if you'll get something else out of it I kind of try to calculate the outcomes:
Promoting with the copy-paste method takes less time, you cover more ground and you burn your mind less, is just repeating an action.
Meanwhile, this method while seems to have a secondary goal, takes more time, doesn't cover as much ground and kind of seems another way to distract potential readers from the product considering that it seems you're using the interaction as a way to not think nor feel it's a waste of time "even if no-one ends up checking out your stuff"
So... you rather spend two hours, probably more times in a day, talking about your comic than working on your comic or having to compensate later for those hours, and while there is nothing wrong with being excited to talk about your craft... it kind of doesn't seem to be as productive or fruitful since you could passionately talk about your comic anytime and at a certain extent it could become a distraction or "daydreaming even".
Personally speaking I just promote when a new chapter has come out, for Love Quotes is weekly, for Scarlet Society is bi-weekly. Then, after those 30 minutes spent just on a single day, I have the extra hour and a half to continue working on the comics and honestly, it doesn't feel boring if you're taking advante of that time to watch/listen to something else in a Picture-In-Picture while multitasking (I work on a desk next to my boyfriend, so we're mostly chatting and watching stuff while I promote since it doesn't require concentration nor extreme focus compared to actual work) and honestly, if a task feels boring then you can either make it less boring by adding an asset to it or just... keeping things the same and continue disliking it.
As well, I believe I didn't clarify this, but the reason why I don't feel if my method works is because I have no access to the comic stats since I'm not the author so I honestly don't know, the feeling may be there, yes, but still, I kind of don't care enough to patch it by asking the stats or another method.