I understand the point the hobbyists are making here, but also, I thought it worthwhile to try several different types of DE razors to get an idea of what works best for me. I even took part in one of the passarounds here. Now I have a good idea what type of razor works best for me. Some here are always on the hunt for something better, which is fine, but I don't see any pressing need.
You are quite correct that certain razors work better for specific individuals. You have to try multiple razors to see which work best for you based on your beard type, your skin type, and your specific technique.
I will even go further to state that because your beard changes with each subsequent pass, specific razors may give improved results for a specific pass. For example, I have a coarse, fast-growing beard and find that specific razors work best to knock down my beard growth, especially if it has been more than 24 hours since my last shave. That usually is either a straight razor or a open comb DE razor. I do not try to get a full BBS shave, but I get BBS everywhere except on my chin and jawline. To get these difficult areas as close as possible without irritation, I use a mild DE razor with a super sharp blade (BIC, Nacet, etc.) for my clean-up pass after a three-pass shave. The type of razor for the intermediate passes is less critical. I might use a straight; I might use an open comb, I might use a SB DE, I might use a single edge. When I travel, I only take a single razor to avoid the possibility of loss, but it is quite common for me to shave at home using four different razors during a single shave.