If you consider a website fully laden with ads as working. I have yet to find an ad blocker that works on my iOS/iPad OS that works as well as on my computer. I also hate apps with all of their invasive data hoarding that is much more controllable on my computer. So to me, websites on mobile are broken as they are full of malware vectors that are not present when looking at the same website on my non-mobile device. For me, website === desktop only

Personally I find the web almost unusable on mobile. It's bad enough on desktop.