Like others said, it sounds good in theory to let users profit as well as the site itself, though ultimately, I think the whole idea of profit in this context is antithetical to online discussion.

In my opinion, an ideal forum or discussion board isn't about farming karma, awards, or real currency. It's about speaking your mind about subjects or topics you are passionate about or have something you want to chime in on. Adding an additional monetary incentive only corrupts those involved, which includes Reddit as we've seen. But I also think this extends to the users as well. If people are compelled monetarily to post opinions that will gain awards or upvotes, discussion will become even more inorganic, for lack of a better term. In my opinion, the site will have lost sight of generating meaningful discussion, even more than it already has.

It's why I like how Lemmy doesn't have universal karma or awards. The incentive of using the site rests solely on the content of the discussions you have, save for the exception of moderators who want to coalesce power. I think monetization is just bloat and only serves to make social media more addictive than it already is.

While I'm not saying Reddit should go the donation-only approach, as I think it is too late for that, I do think keeping monetization to a minimum is in the best interest of any forum.