Even more of them if full nodes start rejecting the Ordinals Attack and the scammers are forced to use third party software to circumvent a lot of stuff...
I don't believe you can stop this without messing with consensus rules. Standardness isn't going to help. Binance essentially funds this, and Binance is literally mining. Newbies can buy and sell this nonsense using third parties, and maybe at this time it'll be worse, because we will have an inaccurate mempool.
Sadly I think you may be right because we let this scam grow too big to be easy to contain. I've been warning this would happen for almost a year and nobody listened. The standard rules could have prevented this whole mess in early days very easily.
Although that shouldn't be the reason for not implementing the preventive measures through standard rules right now either.