Just asking questions (also known as JAQing off, or as emojis: "🤔🤔🤔"[1]) is a way of attempting to make wild accusations acceptable (and hopefully not legally actionable) by framing them as questions rather than statements. It shifts the burden of proof to one's opponent; rather than laboriously having to prove that all politicians are reptoid scum, one can pull out one single odd piece of evidence and force the opponent to explain why the evidence is wrong.
The tactic is closely related to loaded questions or leading questions (which are usually employed when using it), Gish Gallops (when asking a huge number of rapid-fire questions without regard for the answers), and Argumentum ad nauseam (when asking the same question over and over in an attempt to overwhelm refutations).