I think this might miss the mark for me. There are good cover versions of songs that aren't done by the original singer. I don't have any problem with people covering songs, and in cases like Bob Dylan, I much prefer people to cover his songs. Lots of people cover Eagles songs very well.
But those people don't pretend they ARE the Eagles.
The "Eagles" are now a glorified cover band to me. My only problem is that they are falsely presenting themselves as the real thing when there is no Eagles without Glenn Frey.