Or they're just humorous videos meant to entertain and not be taken seriously. Or they are meant to poke fun of the politician, e.g. clearly politically motivated speech, literally propaganda, but aren't meant to be taken as authentic recordings and deception isn't the intent.
Sometimes it's clearly one and not the other, but it isn't always clear.
'I'm just a comedian guys' interviewing presidential candidates, spouting how we shouldn't be in Ukraine, then the second they get any pushback 'I'm just a comedian'. It's total bullshit. They are trying to influence, not get a laugh.
Downvoted...yet here is the Vice President saying the FCC Commissioner saying 'we can do this the hard way or the easy way' regarding censoring Jimmy Kimmel was 'just telling a joke':
Sometimes it's clearly one and not the other, but it isn't always clear.