iirc, roughly 1250 coins = $1
this? do you mean comics, webcomics, or tapas alone?
if tapas alone, yes. if webcomics or comics as a whole, no.
the savvy webcomic artist wont just be on tapas - theyll be on webtoons and patreon as well, first and foremost, theyll likely also have their own site, or mirror elsewhere. theyll sell pdfs and prints and merchandise. what ive gathered from talking to people who make webcomics full time, as a living (its possible!) is that patreon, webtoons funding, and tipping makes up the bulk of profit (in that order.)
beyond that, into the world of print, theres zines and anthologies and competitions, and in some ways now is better than ever a time to be creating unique comics in the print world imo, what with boom studios and image in their prime.
that said, yknow, tryna make a career out of your art - whatever art that may be - is hard, and finding yourself a side hustle is a good idea. be that commissions or working in mcdonalds, sometimes you gotta hustle to achieve your goals.