Of course you are not getting paid for it. Just as little as the guy sending you a patch. If you want you issue tracker to be pay-only, would you be fine with allowing people to submit patches that you can only open after paying?

The "not getting paid a cent for it" is just flipping the entitlement problem around. The person reporting a bug is not entitled to a fix, nor even to be heard (even though, as I claim above, ignoring them is usually not the smartest thing for a maintainer to do). Neither is the maintainer entitled to get fixes attached to bug reports, or even a certain quality in bug reports themselves. All of this is voluntary, nobody is entitled to anything.

But what you can do is foster a good culture. If you incentivize high quality bug reports, for example if somebody shows they made an effort when reporting the problem and you respond with a positive answer, then people see this and adjust their behavior accordingly. If you accept pull requests, especially high quality ones, especially those where everything is well-explained, well-structured and the maintainer's comments are addressed, people will tend to adjust and do it like that more.

Just as much as if you are and asshole about bug reports, you'll likely not get high quality ones or even fixes any longer. Likewise, if a bug reporter is just rude, they won't get attention from the maintainer any longer.

It's all reciprocal. Nobody is entitled to anything. If you play the game right, it's a very productive collaborative framework. And a lot of fun.