It works way better for me on mobile than most new sites do.
Developers assume everyone has the latest iPhone or Pixel. So they take like a minute to load, heat my phone up, drop the battery by 10%, and have a 20% chance of OOM-ing my browser.
The Guardian is the absolute worst at this. I don't know why, it brings mobile Firefox to its knees.
Basically, fancy "mobile friendly" JS is no good if it makes my phone stutter and go catatonic.
Whereas if people just wrote old school "CSS Zen Garden" sites, or even this old table stuff, any ancient phone could handle them easily.
But no, I need to go pay a kid to dig up more coltan.
I can scroll. It's ok. What I can't do is will my phone faster, without shelling out more stupid cash.