7 malicious apps (2022) https://lifehacker.com/great-now-the-apple-app-store-has-mal...
18 malicious apps (2019) https://www.wired.com/story/apple-app-store-malware-click-fr...
Up to 4000 malicious apps (2015) https://www.bbc.com/news/technology-34338362
All Apple can do is revoke app certificates and pull the app from the store after someone else discovers their malicious nature. That's a very low bar that can be met by nearly every app store in existence and it would be a reasonable security requirement for anyone who's operating an alternative app store on iOS.
The rest of it is just theater as there's no security-focused special sauce that Apple is providing in this area, despite prevailing beliefs. This is further demonstrated by their acceptance of an obvious impersonator like "LassPass".
Do you have actual evidence for this claim? Because it's pretty widely accepted that the App Store has higher standards and quality, and you just cited a single case.