Yes, I agree with you that advertisers should be strict, whether on Facebook or other social media, because allowing these scams harms the reputation of the entire crypto industry, as actually happened in 2017-2018 when the ICO wave spread, which caused great damage to the reputation of the industry, and we are still suffering from its effects to this day.
As for Facebook, even if they take stricter measures with advertisers, they will not be able to prevent fraudulent ads completely, but of course they can limit them as much as possible, but in the end we must not forget that Meta is a profitable company and its profits come primarily from advertising, so they may not like such strict measures that may harm their profits.