And now this topic is full of people defending this exact entrenchment by dictat from Apple.
On desktop I personally use Firefox because I find it to be a good blend of performance and resource efficiency, plus it has excellent support of content blocking add-ons.
[To clarify, I had intended to refer to Safari on iOS specifically, vis a vis complaints about the lack of engine choice on iOS. But I recognise that my post didn't say what I had intended.]