A guy refusing any training and then immediately getting hurt doesn't really feel to me like it has the same skepticism for the actual technology.

Especially when basically the same thing could happen with a horse.

May be this is a bit of anachronism but this poem does not read as being anti-bicycle more so than it having hubris and lack of experience with new fangled thing (bicycle).

When someone passing through first rode a bicycle through my grandmother's hamlet, there was a general panic and someone even shrieked "the Devil comes, in two wheels!".

This was in the 1930s.