It was a massive departure from the original offer. All those vesting years are reliant on PAs surpassed and/or awards won in his mid 30s onward. Good luck.
If either of those teams were (allegedly) intent on easily beating MN's offer, how is it also not a bad precedent for a player to spurn them? Negotiations get contentious all the time, look at arbitration, but players almost always end up signing where they'll get paid. Carlos Correa, Dior comments and all, and his famously ruthless agent were totally fine with (allegedly) leaving multiple offers better than MN's on the table? Also, he wasn't upset with the Twins and opted to sign their 2nd offer which objectively worse than the original? Occam's Razor here...