Also, it would prevent researchers from gaining public credit and reputation for their work. This seems to be a big motivator for many.
Right now the climate in the world is whistleblowers get their careers and livihoods ended. This has been going on for quite a while.
The only practical advice is ignore it exists, refuse to ever admit to having found a problem and move on. Leave zero paper trail or evidence. It sucks but its career ending to find these things and report them.
Additionally, MITRE doesn’t coordinate a release date with you. They can be slow to respond sometimes but in the end you just tell them to set the CVE to public at some date and they’ll do it. You’re also free to publish information on the vulnerability before MITRE assigned a CVE.
The idea is to make it easier to fix the vulnerability than to sue to shut people up.
For credit assignment, the person could direct people to the non profit’s website which would confirm discovery by CVE without exposing too many details that would allow the company to come after the individual.
This business of going to the company directly and hoping they don’t sue you is bananas in my opinion.