I'm not sure anyone would dispute that there's some incremental danger to allowing right turn on red. After all, it wasn't the norm for a long time in the US. (It became widespread in the 1970s as a fuel-saving measure.)
Similarly, we'd certainly be safer with lower speed limits.
But we collectively make tradeoffs which may even be informed by some level of data.
To that end, I agree that rhetoric that many "bargain" and "thrown together" bikes are "death traps" does little to help the conversation.
That is, I would expect that quality bikes are safer. I still expect many did just fine on them. (Myself included.)
An easy example, right on red. Statistically, this has been shown to be dangerous. Chance of convincing people of this... Pretty much nil.