I think there should be some incentive for that, like make those kinds of comments a spotlight or something. Maybe make a community called “late replies” that showcases the best such replies, or have a rule saying they grant free karma (in Reddit’s case).
Thankfully not, I don’t miss scrolling past publicly-posted comments which could have just been the save button!
Wait the save button can remind you on Lemmy? Is this on the desktop? I don’t see an option on the Voyager app at least.