Had Tampa not recently won two cups and made a third finals, I really dont think Guentzel would've signed there.
Florida offered Bob the most money, thats why he signed there. At the time, Carey Price was the only goalie making over ten million dollars. & FWIW, by 2019 (when Bob signed with them) the Panthers core had matured and everyone knew they were going to be playoff contenders going forward. They hadn't made any deep runs but they certainly had an enviable core with Barkov, Huberdeau, Ekblad etc.
RE Bolded... Nashville and Seattle offered said players more money than the other teams, and honestly all five of those contracts were widely panned at the time.
Does Brad Marchand tell Boston he will only waive his NTC for Florida had the Panthers been first round losers the last two years? Probably not. However, they were coming off a championship and back to back finals so understandably he wanted to play there.
In 2010 Brad Richards left the Stars for the Rangers, going from a no income tax state to one of the highest taxing states. Why? because the Stars weren't very good and the Rangers were the better team at the time.