That's effectively saying that non-experts should only use something like iOS or maybe ChromeOS. The same class of attacks works against any user using any operating system which allows them to install arbitrary code - Mac, Android, Linux, etc. all have past examples of successful attacks which started with an email attachment, browser drive-by, etc.
That actually may be a very good idea. It's not that non-experts should be forbidden from using these thing it is that we should stop handing people guns that they end up using to shoot themselves in the foot with.
Agreed – I'm not cheerful about the implications of making things less user-serviceable but … it's not like we don't know how well that's worked out.
If you haven't already read it, SwiftOnSecurity's “A story about Jessica” is rather good for illustrating how badly we've failed as an industry to produce devices which are safe for non-experts to use:
It started as a parody Twitter account (https://twitter.com/SwiftOnSecurity and e.g. https://imgur.com/a/1PDRJ) but got more serious over time. The author really came into their own around the time of last summer's celebrity iCloud attack when so many people were jumping to blame the victims for assuming that big tech companies were good at security.