Electric vehicles are not better for environment, and they pollute more than a gas ones.
The first half of that statement is debatable...
you can argue over "better". better than what? what is better? Isnt a bus or bicycle better than any motorcycle?
you can argue over "environment". Are we talking city air quality? mining? theres room to talk.
but that last statement of "they pollute more than a gas ones" is incorrect.
The bike itself is made just like ICE motorcycles... including the motor (starter), controller (ECU) etc.. only large difference is the battery. Lithium for batteries is mined in salt flats, far from the popular pics of strip mining. overall the bike creation is a net zero compared to ICE.
So then theres pollution in use.
People argue that the pollution is moved from the tailpipe to the power station, but thats not exactly true.
First of all, some parts of the world are primarily nuclear, with solar and wind helping. Its true others are coal or natural gas. How energy is generated near you is not universal.
So lets say you have dirty power, like coal. Because its stationary instead of moving, it can be scrubbed and filtered easier. Per unit of power generated, its still cleaner than even the most efficient catalyst equipped ICE motorcycle.
On top of this, your ICE bike at best uses 1/3 of the energy of gasoline to move. The other 2/3 leaves as heat and emissions. With an electric bike, there are losses from chargers to battery to the inverter and motor... but it still is an 80% efficient pathway. So even if the bike is really running of coal instead of solar, its cleaner overall.
Then theres wastes. Brakes and tires are identical. so is grease and bearings. Oil however is another story... thats a couple quarts every 3 to 5 thousand miles for some bikes. After the bike is totalled, the battery, copper and aluminum have significant value as scrap and will likely be recycled. The motor of an ICE has mixed metals and is of far less value as scrap.
so no, from creation to power generation in use to trash, the electric bike creates less pollution, and the energy pollution it creates is in a managed area, not in the middle of the living areas. (unless you live downwind of a old powerplant outside the USA)