That's all I've been saying all along, and my evidence is negotiating common sense honed by years of doing it for a living. If you know your adversary has a floor and you offer them something below that, you already know they're not going to take the offer. So, why bother making the offer at all? One reason could be to appear to your constituents that you've made an effort. That's not as uncommon as some may think.
Another reason could be you want to establish a foothold in case your adversary doesn't get the floor number they want, and then you can be in position to have your offer seen as competitive after all. But that almost never works because most people see an offer that is outside the range of their expectations as being inherently unserious, and perhaps even a little insulting. Not as insulting as if Al had offered, say, 5/100, which would have been a super obvious insult. But if your you establish a floor number and your adversary's first offer in even a closed marketplace is below that, before anyone else even has a chance to make their own offer, then why would you take it?
It's true Correa did not get end up with his $300 million contract, but he did get an offer well above that from the Giants, and that was proof of concept that he was worth that kind of money. He did end up accepting Minnesota's 3/105 because that reset the AAV for a subsequent contract. And it worked, since his second contract with the Twins included six guaranteed years of over $30MM salary, which he would not have gotten from an Avila contract. If all his club options kick in, Correa will end up with $297.1MM over 11 years, which is better than Avila's 10/275 deal would have been, although somewhat short of his $300 goal, and well short of the $350MM the Giants were willing to pay him even after the Avila offer, and before his injury reduced his overall haul.