Before we rush to call the Twins cheap skates, shouldn't we know a bit more about the "unique incentives package" and Buxton's counter-offer?
Hayes seems to hint that Buxton wants more assured money in case he gets hurt again, which is totally reasonable, but isn't it also reasonable for the team to be wary of that? If the incentives are low-ball and meaningless, then I'd say the Twins are being cheap. If, however, he can hit 20M a year by just getting on the field, say, 60% of the time than I'd say they aren't being cheap at all.
Only ten players in the entire league have gotten contracts in free agency over 4 years in the last three offseasons. Only 5 that have gotten 7 years or more in term: Harper, Machado, Cole, Rendon, and Strasburg. Teams don't hand out deals like this much anymore, so it wouldn't take those incentives being all that elaborate for them to be well in line with MLB behavior right now. (I'd argue they would be acting very generously on the term aspect relative to the rest of the league)