You're welcome! I hope it can help!
I think a lot of people do sub4sub are either new so they don't really understand how the algorithm tends to work on tapas yet (which is totally normal) or they may have been on the platform for a while and not seeing any growth and it's getting them down so they're trying what they can to get anyone to react. It can be soul-crushing to feel like you're putting so much work in and no-one's even glancing at it, so I understand the draw.
I've never done sub4sub personnally because I read very slowly and I knew I'd be overwhelmed if I had to read everyone's comic, plus I was warned early on about how the algorithm works. Luckily the algorithm worked out for me, I got boosted to the community tab a couple of times thanks to people liking and commenting my comic, usually only a couple at a time because my comic was so small.
Also I want to say that there are a lot of people who see the number of subs as the only success metric because it's the easiest to observe. However it's really not representative of the actual meaningful success you're getting (usually "how close am I to living off of my art?").
Just taking my own comic as an example, it's still really small in the grand scheme of tapas success, but what you don't see on the subcount is I recently raised nearly 3000€ to get a print run done (which is currently being shipped to customers) and a small amount are on shelves at one of the biggest bookstores in my area as a test run, which is a dream I never thought I'd live to see. The only reason I could do this at all is because the small audience I have is composed of a ton of lovely people who are actively engaged in the story, because judging only by the sub counter numbers my project should be dead in the water.