>>985247That doesn't answer anon's question in any way.
>>985217The only thing intrinsically bad about high tensile steel is that it is not as strong or stiff by weight or volume as "better" steel alloys. This means that a bicycle constructed of the material is necessarily quite heavy.
Because of this, and because weight is an important characteristic when designing & building bicycles, only very inexpensive bikes tend to be built with hi-ten.
As with all things built as inexpensively as possible, quality control suffers. Corners get cut, and nobody notices or cares except the end-user.
All that said, I've put tens of thousands of miles on hi-ten frames in my life. I grew up riding garage sale old-ten-speeds, and I ride one to this day as a beater. It's comfy. Comfy is a kind of good.