Well, this is interesting. But mostly because cloudflare is doing layoffs, but it sounds like they are trying to fire people instead. Not sure why
You won't get severance if you're fired in most cases.
You won't get unemployment if you voluntarily resign.
No, you don't. Oregon Unemployment, Claimant Handbook, Section 6. Source: I helped a friend through unemployment. He was fired from work, and his employer provided a false reason for the firing, triggering denial of benefits. We looked at his options, and it would've been cost-prohibitive to retain a lawyer to fight it, which would've been required.
Firing means that the person is removed from the position.