You’re thinking of high performance sports bicycles.
When bicycles are just basic transport to get around town, where reliability and easy maintenance are a priority, they are very much like they were in the 70’s.

I had situations like this at least a few times a year in school.
I usually managed to convince the teacher I was right.

And yah this kid is almost certainly ND.
Not just the answer, but the handwriting screams dysgraphia.
It looks a lot like mine.