All of the above.

And motorists who are generally less murderous toward cyclists in the US now.

Back in the 1970s while in the Navy I bike commuted, mostly in Southern California but also a bit in Washington DC when I was stationed there for a year. Mostly no problem.

But within a couple of months of returning to Texas in 1981 I gave up cycling and didn't return until 2015. Too many drivers literally trying to kill me for fun. I recognized one pickup that tried to run me off the road -- a guy I went to school with. When I saw him in the post office I told him that was me. He said "Oh, if I'd known it was you I wouldn't have done that."

Like that made any damn sense. He thought it was okay to nearly murder a stranger for fun.

That kind of thing is more much rare now, even in Texas which still has a pretty bad record for pedestrian and cycling safety.