I think it’s a great time to switch things over.
All major browsers and web engines support it and anything that doesn’t anymore is painfully outdated. This would offer you improved quality to storage ratios. Additionally, it would support 10bit colour which can be important with anime art.
If I’m reading this correctly it says iOS does support it? I think you’re looking at the old version in their chart.The site wasn’t playing well on mobile. I can see what you’re saying now on my desktop. I can try it on ios later.