I got this far down in the comments before I realized that this subject was such a big deal to everyone because, for them, their phones are what they use to interact with websites. It's bizarre. Last year I needed to watch a video to do a simple furnace repair, and I could not watch it on my phone... I'd have to keep going back to my desk to watch it there, and then return to do the fix.
Even the laptop's difficult to do much on unless I have it plugged into the dock and the two monitors.
I'm not sure when everyone and myself diverged, but it feels pretty strange.
I do not watch videos on my phone either. I have never visited YouTube on my phone, for example. In fact, I rarely use my phone.