The first two photos are screen captures from video. The last 2 photos shows the doctored one on facebook and the real unedited photo
My take-away is that use of it is not allowed if it may "confuse the consumer" that the item being advertised is endorsed by the official, permanent, Executive Branch of the United States Government.
So, say, a picture put out by the White House encouraging, oh, say, people to buy short-wave radios to help in emergencies would be fair use. A specific brand of short-wave radios then trying to use the seal in advertising, unfair use.
A picture posted by the White House Press office of a political event involving veterans, fair use. The same picture posted by the Donald J. Trump 2020 Campaign explaining how great he is for respecting veterans, unfair use... unless they blur out the Presidential Seal.
An inconsequential use of the seal, like on golf balls or coffee mugs... fair use, because nobody thinks the Executive Branch endorses specific golf balls or coffee mugs.
That's my take on it, anyways.