I think what's hard is that we as fans/alums are deeply loyal to these schools in a way (many of) the players are not.
That has long been true, of course. To (many of) us it's, like, a way of life, something we were handed down by our parents and hand down to our children and share with our friends. To (many of) them it's a three or four-year apprenticeship program en route to the NFL.
But this free-agent bazaar of everyone flipping everywhere on the first Monday of the offseason kind of strips away any veneer that the loyalty goes both ways. I don't blame the players at all. I don't think it's the "end of college football." I plan to keep watching. But I get why it's unsettling.