I am sure this does wonders for many players. I am not one of them . I hold the belief that we all have different mental approaches to the same end. When it works we are all doing the same thing physically. I find it hard to beleive that two equally successful players get the same results working the horn in different ways. There are great players that will tell you to never buzz. I don't agree with that either. I say if buzzing works for you go ahead and do it. How our minds tell our bodies to do what is needed is arrived at in different ways for different people. All of this is my novice opinion. You know what they say about those.
I am not completely head over heels in love with any one method. I take what seems to work for me and leave the rest for others to fuss about.