PRs and OTCM postings can't be deleted - tweets and FB posts can be deleted and thus allow deniability by deleting them at will.
That's the main reason pennyscams like TXHD don't PR many things that are garbage or misleading/fake/non-final. Or trivial and of no real material meaning to the company at all.
It's dirt cheap to do a PR with a service like Pressjet or similar. Butt then the company can't deny that it came from the company or delete it once it hits the wire service.