No reason except what comes from a bit of critical thinking.

What do they stand to gain by fearmongering their models as powerful threats? Clout, funding, fanfare, discussion, limelight, funding, funding, stronger IPO, valuation, funding.

What cybersecurity threshold was crossed by mythos that wasn't already crossed by 4.8/5.5? Crickets from 99% of those who have had access.

Have they pulled the same stunts multiple times before with previous models? Check.

You're blind if you dont think that greed and marketing are behind most things you see and hear about when gigantic corporations are involved.

I don't think anthropic or OAI are evil, but its clear both have contracts/connections with Dod and/or Palantir. Both are powered largely by greed still. If you actually want an example of these sincere founders you think OAI/anthropic are run by... look at Ilya at SSI or something. Please open your eyes and stop spreading your opinions on things you clearly have no clue about.