MySQL InnoDB Insertion Faster Than MyISAM
InnoDB has been faster than MyISAM at everything for at least a decade. This shouldn't be a surprise in 2020. There hasn't been a compelling case for using MyISAM in a very long time.

On a workload that involves any concurrency, the difference will be even bigger.

Also, note that Baron's post is from 2012 - and it was probably borderline in terms of accuracy even back then.