If Tabasco says it, I believe it...period. I doubt there is anyone who has seen more insides of more Teneres than him.
I'll admit, I'm pure neanderthal when it come to suspension. I can tell really, really good suspension, and everything else gets pretty murky to me. The really good stuff is wonderful. To me, that's identified as the faster you go in the rough stuff, the smoother the ride gets. It's rare, I once had an sport ATV that could do it, and I found CW's KTM 690 Enduro R did that for me. When it works, it's mind-blowingly awesome to a person who enjoys going fast in the dirt.
Below that, everything else is hard to distinguish for me. Over the years on various bikes, I've changed oils, springs, emulators, this, that, and other things. Always with the same promise, "you're going to really feel this." I absolutely 100% believe the people telling me this, are sincere, and can tell the difference. I must admit I am not sophisticated enough, sensitive enough, perceptive enough, or just not a good enough rider to tell the difference. I fully believe the problem is me, and do not think for a second the people who do feel a difference are insincere.
I definitely have not changed my fork oil as frequently as recommended here. I use fork socks and have never had a leak of any type at 42K miles and counting. My bike sees a fair amount of dirty conditions. I don't recommend anyone follow my example, but it works for me.