<sigh> I don't know how old everyone is that is posting but let me just say that "natural balance trimming" has been around for a few hundred years.
It's how my grandpap taught me waaaaaaay back in 1959 when I was 12.
What HAS happened is that people evolved away from proper trimming and started to wear shoes on their horses whether the horse needed shoes or not. The fast way to "pasture trim" a horse for the winter evolved and the proper way to balance his hoof got completely forgotten about.
I learned to balance the hoof one section at a time --- sections being four of them ----- back in 1959 from a man that was in his late 60's and was "born on a horse".
I am amazed at the things Pete Ramey teaches that I already learned back when I was a kid. The only thing markedly different and new to me is the agressive toe roll some horses benefit from.
One of my four needs that agressive roll, so my Trimmer does it and I maintenance it, if needed, in between visits. 98% of the time I don't need to do anything, I just think I do because I can't keep my nose out of their hooves
Anyway, there's nothing new about natural barefoot trimming, but if I were going to avoid any methods at all it would be those who practice Strasser or Equiextion<or however they spell it.
And, as another poster stated, like anything else in this life, not all "barefoot trimmers" are created equal. They are just as capable of soring up a horse as the farrier that can't drive nails straight and quiks the horse up