Yeah it's cool people can pay people individually if they like what they read. It's like tipping that musician who plays at your local ferry terminal as you wait for the next boat to come in. If you like his songs you tip him.
It seems like not much at first depending on how many relays you add to your profile. Lets say you wana reach out to as many as possible some relays are just total spam relays ehehum mostr.pub it becomes harder to control your feed because it refreshes every second because we don't have refresh control. What ends up happening is your global feed you just see another spam bot inbetween every post. I've probably blocked 10k bots already.
But you can't stop an algorithim from creating npubs every second to spam the same post. The filter spam checks work only a little bit in filtering them out. It's almost like a cat & mouse game only its add relays make a post reach more people & see more bots. Sure your post gets seen but did it get drowned in everyone elses feed by the spam bots?
Ultimately it is cool to tip for something you like just you have to provide incentive for it to be seen more. For example awhile back there was a big ad going around willing to pay every booster 10k zaps per repost. Lets just say 3 days straight you saw nothing but that ad everyone & their grandma was doing it. I made 150k in zaps reposting that over & over.