Even in the Netherlands, bicycles was the most dangerous mode of transportation in 2021, with 207 fatalities. Cars came in second with 175 deaths.
https://www.statista.com/statistics/523310/netherlands-numbe...
When a car kills a cyclist it's not the bicycle being dangerous, and you can't compare numbers directly without normalizing by some metric (hours, km, trips). Although in the latter fallacy I believe correcting it will make bikes look worse.
Also keep in mind people of all ages are allowed to ride bikes, which is luckily not the case for cars. This source does say elderly and children are more likely to be part of cycling accidents (not necessarily fatal) https://www.veiligheid.nl/kennisaanbod/infographic/infograph...
Also driving under influence is (hopefully) much more prevalent in case of cyclists.
Hence, car drivers switching their transportation mode to bikes don't have the same risks as the entire cycling population.
I get what you are advocating for. I have had several periods in my life where I used a bike as my primary form of transportation. But it only works well in a pretty narrow set of circumstances.
People have pointed out that most people can use bikes for pretty much everything, but obviously there will be a need for the occasional car. Some people will need to use cars more, other less. But if you make the simple mindset change of first planning to bike there and then falling back to the car if you deem it infeasible, we’re already most of the way.
Most of the safety concerns for bikes disappear as soon as a certain amount of bikers are in the streets and the infrastructure isn’t actively hostile to them.