I wonder which app store - Apple's or Cydia - has a bigger percentage of malware on offer? How effectively does Cydia police apps on offer there against that sort of thing, or how easily a bad-acting software developer/company can be effectively (deterrently painfully) sanctioned for their bad behavior by Cydira (or Apple)?
Store brands have a cost to maintain in the quality of goods on offer, the customer service, how well the store's buyers know the customer base and thus what (and how much) to buy or not buy for retail sale. We observe this in retail as the differences between Dollar General, Walmart, Macy's, and Nordstrom.
Personally, I appreciate the efforts that Apple puts into its app store, imperfect as they are (I still see what amounts to immense amounts of crapware whenever I search for anything generic, and that makes me wonder about malware), and I can see Apple's point about how bad apps in a bad store would likely reflect badly on the platform too.
For the obvious counter-example, see the Google Play store for the result of insufficient curation (or have they cleaned it up since I last looked, pre-pandemic?). OTOH, I used to work for Apple in the 1990s, so perhaps I'm improperly biased.