it matters in the same way a Honda disguised as a Mercedes it's not a Mercedes. It's a Honda.
> Whichever engine the browser happens to use is the least of their concerns.
Not disagreeing with you on this, that's the way it should be.
OTOH, using simple logic, if it doesn't matter Apple would allow other browser engines on their platform, because it doesn't matter. But apparently it does matter. It matters so much that EU is trying to force Apple to permit alternative implementations of the software called "a Web browser".
Anyway, we have a precedent:
"Microsoft distributed its browser software, Internet Explorer, among consumers for free. It led to a concentration of the market share and the eventual downfall of Netscape, the company’s top competitor at the time. The DoJ case alleged that Microsoft was intentionally making it extremely difficult for consumers to install software by other companies on personal computers that ran on Microsoft’s operating system."