I've been doing security research for several years and have often participated in Bug Bounties, but my experiences were very mixed
Earning money with Bug Bounties is not easy
The way most bug bounty plattforms work today is hostile to researchers and not good for security
This incident highlights several problems common with bug bounty programs
Programs have arbitrary rules what counts as a vulnerability
Attackers don't care about your scope
It's quite common that bug bounty plattforms reject vulnerability reports as invalid *and* at the same time ask researchers to stay silent about them
There are more problems
Demanding proof of concept
This just isn't very efficient - creating a PoC is often vastly more work than finding a bug and attacks often use exploit chains
Bug bounty programs often feel like they're optimized to reject as many reports as possible, not to improve security and create a healthy relationship between researchers and companies