Seems like a bad idea for a public SaaS company that relies on trust from customers that their data is secure to piss off their own offensive security team by firing them suddenly without even a warning received.
I expect that lots new Salesforce vulnerabilities will be discovered and disclosed.
Last year we reported a vulnerability where a default option in Salesforce orgs allows browser session hijacking. They came back telling us that it wasn't a bug, but working as intended, and that bugs like that aren't part of their bug bounty program anyway. Then when we found a public salesforce forum post from eons ago where a salesforce employee confirmed this bug/feature and tweeted it to our clients, they kicked us out of the bug bounty program for disclosing vulnerabilities.
I expect that lots new Salesforce vulnerabilities will be discovered and disclosed.