The issues you are identifying aren’t the fault of attempting to add non-car modes of transit, those people are just the victims. The issues is that they add them while fearing slowing down drivers or taking away parking or lane space. If drivers are swerving into unprotected bike lanes, you don’t go “guess bike lanes can’t work”, you protect the bike lane. If drivers are hitting bicyclists when there’s no bike lanes, build more bike lanes and slow the traffic down. Ride a bike in HCMC or Hanoi some time. There’s literally thousands of bikes on the road, swarming cars, trucks, buses, and pedestrians. Serious accidents are very rare in the city, and typically involve texting or drinking. If drivers in your area drive too dangerously for mixed traffic, the problem is the drivers driving dangerously, not their victims.

It’s not implemented well, and it’s getting people killed.

So implement them better, either ban right on reds or start ticketing drivers who don’t come to a complete stop.

As for e-bikes: They’re basically not regulated, there’s supposedly a classification system for them, which people ignore. There’s no enforcement, and they do whatever the hell they want, including riding at travel lane speeds on sidewalks, which causes collisions because no other traffic, vehicle or pedestrian, is expecting 20+mph traffic on the sidewalk

Design sidewalks better. Couriers use bikes on sidewalks across east asia, except Japan, nobody cares. You can slow heavy ebikes via pavers, or block them entirely by requiring they be lifted a certain height.