> Neobchadza ziadne "ochrany", proste rozprarsuje ten vybloatovany javascript, a umoznuje ti stiahnut video, a prehravat si ho aj mimo browseru.

youtube-dl obchadza ochrany, pretoze bez tohto toolu a kyblov znalosti sa k stiahnutiu videa nedostanes, pokym (v pripade youtube) nie si platiaci zakaznik. ked nejaky autor uploadne video, tak ho mas ty ako user automaticky narok stiahnut? to asi nie. youtube-dl je velmi na hrane legalnosti a podla mna bolo iba otazkou casu kedy mu niekto slapne po krku. tvrdit ze parsovanie javascriptu a spajanie chunkov streamovaneho videa do jedneho celku nie je neautorizovane kopirovanie diela je len tvoja interpretacia, pretoze ty ako uzivatel na to nemas pravo podla standard youtube license:

The first option is "standard YouTube License" which means that you grant the broadcasting rights to YouTube.
This essentially means that your video can only be accessed from YouTube for watching purpose and cannot be reproduced or distributed in any other form without your consent.

s touto licenciou rataju aj nahravacie spolocnosti ktore maju k tym dielam copyright.
DMCA ma klauzulu o tooloch, ktorych primarny ucel je pomahanie obchadzania "ochran" a o tu sa pravnici RIAA opieraju.