It's worth bearing in mind that the Safari major version and OS version are tied together.
Latest Safari cannot be used by users who cannot run the latest MacOS on their hardware, or have reasons not to (such as bricking risk with latest MacOS on old hardware.)
(I imagine it's similar with iOS but I'm not sure.)
Latest Safari cannot be used by users who cannot run the latest MacOS on their hardware, or have reasons not to (such as bricking risk with latest MacOS on old hardware.)
(I imagine it's similar with iOS but I'm not sure.)