Indeed, an interesting review but, like all opinion based comparisons, tends to miss some of the important elements and exposes personal bias.
There was no mention of fit, especially with good leaders, and the fact that well fitting leathers are MUCH better at holding the amour needed to protect against impact in the place on the body it's supposed to be.
There was no mention of the fact that, in general, for a given price, leather garments generally offer a a higher safety certification than textiles.
The point on comfort was very much his opinion and was very dismissive of leathers. I've done many 600+, 12 hour days in my leather suit, ridden in temperatures ranging from high 20's to around 10 all while in no more discomfort than my textile clad fellow riders, and often suffering less discomfort than them.
I've ridden in cheap leathers, cheap textiles, expensive leathers (BKS made to measure) and expensive textiles (Hein Gericke Master V, BMW Street Guard, Klim Carlsbad ) and there is a reason my go-to suit, whatever the journey, including touring, Sunday afternoon blasts and commuting, is my BKS leathers.
That said, whatever works for you is what you should wear.