This only applies to SPACs with a sponsor, and even then only when the sponsor takes a bigger cut than the profit from buying the firm and taking it public.
And even then, it seems like a stretch to call it a scam: if you buy an investment product because it sponsors someone you like, you're gonna pay accordingly. Nike or Coke Cola aren't a scam because they cost more and spend the money sponsoring celebs. Neither are these.
Are they worse value for money? Yes. But that's pretty obvious and people don't just look at cost/ingredients when they make their purchasing decisions. That's their right not a scam.