The fact that Viloteau rarely does technical exercises doesn't mean that he didn't do tons of them when he was learning his technique. In fact, Viloteau is one of many of his generation of virtuosos who have released technique tutorials on youtube, so, clearly, he advocates technical practice at some stage of learning. His guide to arpeggio study, Vardanyan on scale practice, Dylla on Carcassi Study #7, not to mention various master class videos, give us some insight into their respective approaches to studying technique, even if they themselves have left that particular phase of their education behind. Some of them have published their own technique books as well.
As to comparisons with earlier generations, I expect and welcome a more or less steady advancement in the state of the art as a sign that all is well. After all, this generation is standing on the shoulders of the previous, who pioneered much of the pedagogy and promoted both a higher level of performance and of teaching. Thanks to them, guitar is now taught at many conservatories, where guitar students benefit from exposure to aesthetic and performance pedagogies developed and refined for centuries longer. These students, in turn, will refine technical and artistic teaching even further, correcting when necessary, benefitting the next generation.
EDIT: Not to mention the engagement, by that older generation of guitarists, of composers and audiences accustomed to the highest levels of virtuosity, and those expectations then becoming the norm for classical guitar performance as well. It is a complex question, with many facets and interactions, but I think that, overall, it's a synergistic climb to higher levels.
Last edited by robert e on Thu Apr 06, 2017 7:23 pm, edited 1 time in total.