oh, absolutely. I think these are really good rules to have. I got like..such a graveyard of unfinished comics and unfinished projects and business ideas that because of my hard stop rules where I was like "welp, times up, didn't work out, time for something else!" and I moved on. It's like a huge weight lifted off of your shoulders whenever you do it, and I highly recommend it if your current project just isn't giving you joy.
Comics aren't where I spend most of my time, and I do them mostly for fun, so I'm a lot more forgiving when they don't meet my statistical standards, but when I am ITCHING to work on something else, that's when I know that my current project is keeping me from something else I'm more excited about (and honestly I am surprised I'm still doing my current comic, but I just didn't have another comic I wanted to make until more recently. So, now I'm planning out how I can get it to a stopping point and then just release the rest of it as a tapas novel, since I wrote it as a novel originally.)
Also, the internet is unforgiving, and so if you aren't getting numbers initially, it will be so much harder to gain numbers as time goes on. The algorithm starts working against you. So, sometimes letting a project go and then uploading it somewhere else years later will give it a second chance and you'll be more prepared at that future time to help it get off the ground.