I like how in their minds, changing the copy on a website is "changing the definition of a vaccine" and some deep dark conspiracy theory as if it's some binding legal framework and not a public comms platform.
[1] https://www.google.com/search?q=definition+of+recession&sour...
It looks like NBER's definition of how they declare recessions has remained consistent, so I'd defer to them:
https://web.archive.org/web/20210103093754/https://www.nber....