In many jurisdictions, staircase handrails are required[1] in residential homes.

And even when they are required, it's up to the person using the stairs to determine whether they wish to elect to use the handrail or not.

[1]: IRC R311.7.8

Well in my book it is a cost vs benefit question. Handrails are not expensive in comparison to a medical procedure, nor are they particularly hindering in the daily use of the stairs. In fact, quite the opposite: anybody who uses stairs without handrails may find themselves temporarily disabled, e.g. if a circuit breaker tripped and you have to walk down the stairs in the dark.

That means, handrails cost little and have nearly no downsides. Which is why I used helmets as a metaphor. The proposed restrictions has a lot of downsides to deal with a mostly theoretical risk.