>>512310257There have been similar conjectures in the past that got resolved by unknown people, but they were different in nature because they were more gimmicky and much more niche.
1. would be Yaroslav Shitov and hedetniemi conjecture
https://arxiv.org/abs/1905.02167
2. would be Hadwiger Nelson Conjecture , which was (partially?) resolved by Aubrey De Grey (famous guy who comes from the field of human life extension)
https://arxiv.org/abs/1804.02385
These two are much more gimmicky and not that important.
There are actually fully grown mathematicians who get (and now GOT) paid salaries to research the Mizohata-Takeuchi conjecture
https://www.youtube.com/watch?v=ebPatCu9W_Q (2022) , 1 person
https://arxiv.org/abs/2302.11877 (2023) , 3 people
https://scholarworks.aub.edu.lb/handle/10938/26115
People wrote PhD theses on it (not how to solve it):
https://etheses.bham.ac.uk/id/eprint/15634/1/Ferrante2024PhD.pdf
There's some more. It's not the greatest acheivement but it's up there and most Mathematicians will never achieve anything like this (realistically) for different reasons.
People saying he/she got boosted are wrong btw, he didn't acknowledge anybody in his paper on arxiv - which means he did it on his own almost certainly.