[kjkjadksj]

Just zoom the smartphone into one column. Problem solved.

[mmis1000]

And then you will have to scroll both top bottom and left right, a even worst experience.

[GoblinSlayer]

It's about "One column layout is too wide" - if you zoom, it's not too wide anymore, also smartphones have narrow screen, not wide, and tablets can do that too afaik.

[kjkjadksj]

Scrolling like that is not hard in smartphone format imo