I just read the blog post and It all seems pretty par for the GP course. I don’t think your characterization of him is very fair.
Yes, he has string opinions and he is very clear about where he stands, what he likes, and what he sells, but I generally don’t find he condemns other for not feeling the same.
I don’t think he is particularly anti-ebike, either. He is just expressing the opinion (which I agree with) that they are are motorized, and therefor not really bicycles.
I don’t agree with some of GP’s views (I love disc, and if I never see another threaded quill stem again it will be too soon), but I always get a lot out of reading what he has to say. I think his appoach to bikes and riding is something that was sorely missing in the industry for a long time.