None of those options apply: Apple did (and still does) ship regular security updates for iOS users which included Safari, but did not include Safari web-platfo

None of those options apply: Apple did (and still does) ship regular security updates for iOS users which included Safari, but did not include Safari web-platform feature updates (i.e. CSS+JS+etc support) unless it was a significant iOS update (such as the yearly major-number increase or the "half-term" point releases) until 2022. Apple's handling of Safari mirrors Microsoft's stated plans for Internet Explorer back when Windows XP (and IE6) launched in 2001: they said they'd treat the browser as a core OS component that would only receive major web-platform updates with major OS releases (hence why we had to wait five years between IE6 and IE7, during which Firefox saved us from a mediocre web experience). ...could be worse: could have been like Outlook which has been stuck on Word's HTML rendering engine since 2007 right through until today's "New Outlook" rewrite - that's that's got to be an unbeatable record for the "world's most stagnant web-browser".