It was just a nonsensical statement to me, so I'm grateful that you explained your line of reasoning. I don't see the relevance in this context, however. The vast majority of people on Sherdog, even on the technique subforums, will never have a pro fight. Being "a sparring guy" isn't a valid put down in this crowd, since it's a much better background than the average.
I appreciate it, but in fairness he does have a point.
I've competed, but mostly in Judo. My background is Judo and Boxing, with MMA training being kind of rare (I don't have any good gyms near me in SK, and not the time to travel).
With a Judo mindset, I'm very respectful of the damage subs can do, and have had it hammered in over and over again to respect your opponents. When I started I hurt a couple of people through poor technique, and I've been hurt by beginners by similar poor technique.
The whole thing really is a bit of a strawman anyway, because like I said- I honestly can't think of a real example of people getting hurt without having their fair chance to get out. Wrist locks and finger locks are banned, and most large joints will take a while to lock in. Most breaks result from stubbornness, not poor technique- and Palhares is a refusal to let go after the tap, which again isn't what's being discussed.
At the highest level, you have to be prepared to get hurt to be the best, so yeah. These guys know what they're getting into.