That... doesn't appear to be true. It's Wikipedia, the whole history is available. Heres the page as of early/mid April: https://en.wikipedia.org/w/index.php?title=Excited_delirium&..., which as far back as I've bothered to go, and the cited paragraph is still there.
in addition, here is the link for covering all changes on June 17, which shows that the section is question was not created or renamed on June 17, though it was substantially modified on that day : https://en.wikipedia.org/w/index.php?title=Excited_delirium&...
I don't know why it being substantially modified on that day would be important. Is there some significance to that date that I'm unaware of, other than it being "1 month ago today"?
That date is just when the wikipedia sentence was written, probably becuase it tracks with exactly this controversy about police violence. The facts its cites about support within the medical community certainly aren't new.
I don't know why this seems so surprising to some here. The police use loopholes like everyone else does. If this gets them off the hook for borderline use of violence, of course they'll use it. If it's used inappropriately, they should stop.