If you discover a genuine cryptographic vulnerability or a security flaw related to Bitcoin Core or BIP39 seed generation, the project maintainers may be interested in reviewing your findings. Any recognition or reward would depend on the nature of the vulnerability and the project's disclosure or bounty policies.
Repeatedly posting the same thing over and over without directly addressing their concerns is only going to make the whole situation worse
[based on the above two users, there's a trade-off with the modern way]!