This is also causing more work for maintainers: now they have to check
if any Sponsored-by tags are present, and track if there is a response
with a matching Acked-by tag...
And obviously they should postpone applying the patch until a
confirmation response is sent... which may never happen...
Yeah, definitely not going to track that. I'm pretty agnostic to the tag
itself, but please don't put the burden of validity testing of it on
maintainers...