All's fair in love and war. College football is big business. There is no easy way to say 'goodbye'—and for players to rip a coach for leaving last minute, when said players will flip on national signing day (burning a school that recruited them for years, planned on their arrival, didn't recruit other players at the position, et al) or kids that will bail early to go pro, when a program was reliant upon them the next year ... it goes both ways.
Had Taggart not done a good job, Oregon would've had zero issue firing his *** and sending him packing just before Christmas. Instead, dude is from Bradenton, was offered a gig at Florida State (after coaching at South Florida for a few years) and is back in his home state.
Sounds like sour grapes from some 17-year olds who are too green to know how the game works.
Taggart had to play his hand wisely; as would any coach in that situation. Things could've fallen apart with Florida State at the last minute—so if he announces that he's going and then is stuck in Eugene, then what? Awkward.
Again, there is no "right" way to do this. People need to grow thicker skin. College Football is high-stakes poker and then some.