Project Drawdown has characterized a set of 93 technologies and practices that together can reduce concentrations of greenhouse gases in the atmosphere. It’s a gigantic project with a lot of data and analyses.
In the linked video, the author goes through the measures to find which one is the most cost effective in terms of ratio of rCO2 reduction and economic cost
The maybe surprising result is that building bike infrastructure to shift a not even big percentage of travels from cars to bicycles or ebikes, is very cheap and has a huge effect on emissions.
The premise is that all solutions should be implemented to have a significant effect, but some are easier done than other.
Anything custom/aftermarket/DIY is such a small portion of the market as to be functionally irrelevant in terms of policy considerations.
(In other words, anybody opposing expansion of bike infrastructure on the grounds of boogeymen riding at illegally-high speeds on custom e-bikes is arguing in bad faith.)
Agreed.
My point is that they exist and are relatively easy to get, not that they’re a problem. We should encourage such things because they get people who wouldn’t otherwise be interested in cycling to get interested. If it becomes a problem, we can push them into the street.