I'm currently building in the ability to inspect a transaction's effects before it is run directly into MetaMask. So... we'll alleviate some of the problem Soon (TM)
There is nothing about crypto that prevents scams.
But in the regular banking system we have decades of experience in how to mitigate the impacts of them e.g. account insurance, MFA for any new transfers or over a certain limit, auditing by independent regulators.
Crypto attracts a lot of statements like this and it's so ridiculous when you think about it because usually the statement applies so generally as to be virtually irrelevant. Almost every invention or new thing solves a problem that was solved already, and yet they often find success and may even become more popular than whichever way people were using to solve that problem before.
The tech community should be keenly aware of this because there are new apps, new languages, new libraries, new plugins, etc all the time, which solve a problem that was pretty much solved already.
You might counter that new things usually have to have some value proposition to gain a footing, like cheaper, faster, more reliable, etc. For one, that's not always true, but also crypto does have a value proposition like that. It's immutable, trustless, and can be anonymous. And it is even cheaper and faster than the regular banking system in some circumstances, depending on the sum being sent and where it goes.
