I can't comment on the other points, but the author is right about Firefox. The last time I tried it (several months ago), it really came across as a browser that looks like Chrome but is worse in almost every way. It's lack of performance is what struck out to me the most, despite the fact that I have several extensions running.
This is just anecdotal of course, so take it with a grain of salt.
This is just anecdotal of course, so take it with a grain of salt.