Fucking lmao even a reincarnated fan (or "fan") doesn't want Yamcha to win at anything. I think I get why Toriyama was more than happy to just die and leave it behind; yeah, he got rich off of it and so his family's gonna be living comfy, but there is no way he was actually 100% okay with this.
It wasn't that he didn't want to win, he actually had second thoughts by that point about letting himself get cucked for the sake of Trunks as this was after Trunks had arrived from the future (I think) (and nobody cares about Kid Trunks). So he tried to challenge Vegeta for Bulma and got no-diffed as a result.
You'd think that a Dragonball Fan would immediately lock on to the easiest way to get retardedly powerful at no real cost to yourself by figuring out a way to get in communication with the Supreme Kai (North Kai or Grand Kai, I guess) so you can tell him about Old Kai sealed in the sword which Shin should be able to breaak if that's the goal.
Then just bribe Old Kai with the means to get an unlimited amount of pictures of naked women by telling him about the internet or something, and voila, Potential Unleashed Yamcha.
There's so much that the story could do.
It even starts off pretty good, too! Where he goes to train with Roshi with Goku in Early DB, he drinks the Ultra Divine Water, and he even goes to Namek early to train with Nail and get his potential unlocked by Guru! But then his "goal" of not dying to a Saibaman is fulfilled and he just... stops? The story doesn't get to Buu before it abruptly ends, but I guess Yamcha forgot Gero impales his ass in the Android Saga, and Super Buu turns him into fucking chocolate.
But of course, Yamcha has to be a cuck loser.
It's such a frustrating story because you could easily do so much more with it if it wasn't just a "haha, Yamcha is loser" story.
Instant Transmission, Kaioken, God Ki, the Fusion Dance, the Potara, there's even a bonus chapter where he asks Bulma to make the EX Fusion rings from a videogame so he can fuse with Chaitzou (Who was also reincarnated) and they say they might be able to beat a Cell Junior, but that goes fucking nowhere either.
Fuck, you could even be extremely cringe and ask Shenron to make you into a Saiyan or something.