That probably depends on your definition of a scam, but it seems fairly low. Many products and services advertised online just skirts the border of being scams or fraud.
That probably depends on your definition of a scam but I'd argue we need to resynchronize that definition. They are scams, because the people behind them know what they're saying is plainly false, and they exploit the explosion of digital networks (like ads) to spread those lies. In the 20th century, the channels for scams were far narrower and easier to pinpoint.
To me any product advertised on Instagram, or through YouTubers sponsorships, have become synonymous with overpromised bullshit if not outright scams. Every single time I see a sponsorship deal on a YouTube video I do some research just to validate it, and the vast majority of it are outright shitty products.
It's been working great as a signal of what products not to buy.
Probably 75% of products you see on instagram ads, you can go find on temu for their actual cost, usually at 80% discount.
But when you do buy it on Temu, is it even a legitimate product?