I frequently get DraftKings ad on YouTube featuring Kevin Hart and Nick Jonas, they're pushing the information that it is now legal in every state.
I also get loads Polymarket and Kalshi ads. Polymarket seems to have invested tons into featuring mega celebs like LeBron in one of their ads. Other ads feature influencers showing off how to trade and such. More obnoxious part is that these companies pay influencers to talk about trading and winning live on streams- without disclosing they're paying those influencers.
Polymarket even set up fake website where influencers showed they were winning hundreds of thousands of dollars. You wouldn't find those bets on the real Polymarket website.