I think Napier would laugh in Stricklin's face if he was offered 5 million per. Right or wrong, that's simply way below current market value and would be an insult.
Maybe. Definitely not saying you're wrong because as you said: right or wrong, that's the way the market's trended.
That said: it's been done before. Steve Sarkisian's Texas deal was a six-year $34.2M contract, with base salary of $5.2M with increases built-in every year. Both Florida and Texas are expecting similar things in their coaches: ability to recruit well, put up offense, carry the brand, compete for championships, and beat hated divisional rivals.
Napier comes with a lot of risk--and if our administration has any business sense whatsoever (which I strongly doubt given their track record), they use that to their advantage when negotiating a contract and buyout. Napier wants a large staff and to pay for it, might have to accept a smaller starting salary with built-in escalators if he does well.