True, as far as it goes, but so did a whole lot of other bands, such as CSNY, Doobies, AWB and The Carpenters. None of these have been linked with the emergence of punk, and let's be fair, one YouTube post holds very little weight in the court of public opinion. You can certainly say a punk might have worn a T-Shirt with "I HATE EAGLES" (hoping that no predatory birds in the area would take offence and attack him!) but I have literally never heard the band mentioned in the same breath as punk.
Anyway, punks can kiss my ass: Eagles rule, says the old balding guy from the unfashionable country with the questionable taste in music and giving not one single flying **** who thinks so.