Ps, this gave me an idea for possible vegetarian branding: names like “not a burger” seem to still be allowed, so a line of foodstuffs called “not a sausage” etc might be fun.

That’s definitely gonna happen, there’s already a plant drink brand named “this is not m*lk” (including the censoring) in Germany, as here a similar ban is already in effect for the word “milk” to exclude soy milk / oat milk / …

I don’t think The Guardian is wrong here, see this passage from the article:

Comer has sent 16 letters to former Biden White House officials requesting transcribed interviews, NBC said. Metadata analysis showed that all appeared to be signed with a digitally inserted signature. Further letters requesting testimony from the White House physician Dr Kevin O’Connor and Anthony Bernal, a senior aide to former first lady Jill Biden, were also signed with digital images, NBC said.

He did not use cryptographic signatures, but images of his written signature, which I think is pretty similar to using an autopen (albeit probably much easier to detect)