You can actually find these elements used by high level boxers if you know where to look. The difference is that
- these methods are not normally taught as basics, but are rather used by individual boxers as part of their personal style
- these methods are not used in isolation, but are blended in with all the standard boxing tools as necessary
Learning WT actually helped me understand what certain boxers were doing that appeared to "break the rules" that I learned in boxing and why they were able to get away with doing so.
This subject reminds me of a post I've been meaning to make for a while, about how the technical differences between the personal styles of individual high-level boxers (including world champions) can sometimes be greater than the difference between two randomly selected styles of Karate or even between some related styles of CMA. Despite that, no one tries to claim that (for example) Mike Tyson and Mohammed Ali were practicing different martial arts. Maybe I'll get around to making that post later today.