Don't confuse "only supporting Chrome" with "not supporting every crappy browser ever made". Standards will move on so the acceptable bar for what you support will also keep changing.
Safari might have user numbers behind it but it also has a huge pile of rendering oddities and half-implemented standards. They're not keeping pace with other browsers.
You sure it’s not blocked by an overzealous content blocker? I’m never able to visit arstechnica on my phone for that reason. You can long press refresh, “reload without content blockers.”