If find the video quite interesting and very informative. As I was studying the classical guitar my teacher was definitely an advocate towards the Segovia method and while we worked on pieces by Sor, Tarrega, Carcassi and others I was totally unaware that these composers advocated having no nails on the right hand. As noted in the video unless your nails are trimmed to the flesh there are instances where depending on tonal and dynamic preferences all flesh or some nail as in your case can be applied which makes for a broader scope of tone and dynamics as a result.
Such great tools we have available today truly expediting are ability to hone our skills and broaden our knowledge base.