They are not the solution. They represent a specific way to mitigate the problem by reducing the output of a very specific type of emissions.
I'd argue that setting up a functioning mass transit network in urban areas does more to lower emissions than switching powertrains in personal vehicles.
Most people use bikes or electric bikes to get to the metro or for short journies (probably at a ratio of 2 to 1) but people still want cars.
In Shanghai and Beijing, you can get an EV instantly but there is a quota for how many new ICE cars are added each month which means you go on a waiting list.
Mass transit will help, but people are going to buy cars and drive regardless. EVs are clearly the solution to this problem.