Nah.
Maguire wasn't the most expendable component in the team - I don't remember anyone saying that. What people will have said is that Maguire wasn't our best CB. And they'd have been right, because in their time together, Evans had been the superior player. Though considering we had Soyuncu waiting in the wings (who is probably as good as Maguire, if not better), then maybe those people were right.
It's clearly not true for all players though. We knew we'd never be able to replace Kante, or Mahrez - they were huge, huge losses, but was out of our control. If we'd lost Vardy earlier (like when he nearly went to Arsenal) then we'd have had a fit. But for the most part - Drinkwater, Maguire, Chilwell - it's players that we can get a good price for, that we're confident that we can replace with someone of at least equal quality.
If you have a look at the Leicester forums, most aren't too bothered about Chilwell going. If it was Ricky P or Soyuncu going, there would be a meltdown.