Only in actual sales data, iPhone devices are far below 50%. It just turns out that users on iPhones browse a lot more than users on other platforms. In just about every country the representation on statcounter significantly exceeds the actual sales metrics of the device.
No, Apple doesn't "force" people into app store apps, and by actual empirical data, facilitates browsing the web even more than alternatives.
As to Safari being the "worst web browser in existence", after chuckling at what I assumed was some sort of parody, I realized some people actually believe this noise. Usually because someone, at some point, stomped their feet and had a fit because Apple didn't immediately support whatever their pet proposal was, and this got spun into a fantastic conspiracy about invented motives.
Yet in the actual real world, Safari is the most performant browser by a country mile. It's the most privacy focused. It supports everything and its brother. For all the pissing and moaning about edge conditions of standalone web applications, Safari was far and away the earliest mobile browser to actually support them! Long before Chrome on Android did.