These matches could be rigged.
If they're for the clout, they've already won the attention of their fans and also the people who just want to see how they box.
But I wouldn't put any penny on these matches because it's how they make money, making big bucks from the bookies and who knows if all of these celebrity matches and youtube matches are just scripted.
The moment I saw the poster the first thing that came to my mind was “staged” and if the match is being staged that means there is a high probability of it being rigged and if people should bet on it they will most likely lose their money since the match will be scripted.
I have seen several streamers do this and I have never been interested in watching them fight let alone bet my money on them - to me it feels as if they are just chaining clouts and probably wants more public attention. Although, I search this particular one but I couldn’t understand what was written on the site because everything was in Spanish and I also saw other fighters in the site and this kinda look legit (more than other streamers own I saw in the past).
They'll also depend on the odds given by the bookies.
Whoever has the bigger odds, that's where they're going to bet and that's up to the script that they'd do. But even without sponsors as long as they're in the books.
They'll continue the match and they'll bet with millions that they can to take advantage of it. There will be for sure a split of profits.