I don't think it's required to be a professor to tell this. It's pretty obvious that a 2 ton car is worse for the climate than a 15 kg bicycle. They also do completely different things though.

The article seems to bash on electric cars for no particular reason.

You know what would be even more environmentally friendly than even bicyling to work? Staying at home. Working from home could save a lot more and doesn't require infrastructural investments.

Anyway, the percentages mentioned are still quite low. It would make a larger difference to focus on other kinds of transport than personal vehicles.

There are larger fish to catch. One of them is the ships. A lot of them transport fuel. Changing personal transport to electric cars, regardless of how efficient they are or not, will also have the effect of lowering the amount of fuel to be shipped around. The environmental impact of distributing fuels is larger than the impact of personal vehicles, so by all means, we should change as many industries and transport forms to electricity instead of fuel, including personal vehicles.