Aren’t most browser engines insanely old though? I agree there should be better addon support for IOS, But the two most popular browser engines are Firefox and chrome, which released in 2004 and 2008 respectively. They have been updated extensively since then, but those browsers aren’t new either.
You can get some addons for safari, like I have an Adblock on there. It is very hit/miss though and should be better
It’s for the lights in the truck bed. Mine has that as well