But, here is another point of view (perhaps it can help, i'd love to see html 5 support improve on iOS).
Internet Access is a "human right" and according to the United Nations ( https://www.article19.org/data/files/Internet_Statement_Adop... ) , they condemn countries that intentionally take away or disrupt its citizens’ internet access.
Perhaps by not allowing "basic internet access" ( html 5 is part of the web), Apple is a distrupter of a basic human right.
The platform, where we could least of all platforms, use our basic human right to browse the web is iOS. So Apple is, in it's own way, a company that blocks a basic human right. And the block it because of own financial gain ( using the app store instead of the browser earns them money)