Just my opinion here, but this is terrible advice. I agree with the author that JQuery's existence was predicated on the fact that it wrapped terrible browser A

Just my opinion here, but this is terrible advice. I agree with the author that JQuery's existence was predicated on the fact that it wrapped terrible browser APIs, and that in the (more) modern world we no longer need these wrappers. However, non-framework code is more verbose and is more likely to be prone to error. It's also likely harder to code review with peers. From a maintenance perspective you want less content/more safety.