Sure, but he was available for a 4th.
And it was a steal of a trade.
We've talked about this before. Bishop was as good as it gets for a goalie being available. The question mark surrounding him was his health. If you don't have netminding then he's absolutely a great gamble to take. He'd already had a couple of Vezina caliber seasons behind him. But his health was an issue and he was coming off a bad year, that's why he's making less than 5 mil a year. He was a gamble but a very smart one for a club without goaltending.
Franchise goalies aren't available very often. And when they do become available it's because something weird happens (think Mario Tremblay.) But teams don't give up Quicks, Rasks, Lundqvists or Price because they're consistent and you know what you're getting.
That doesn't mean they'll win you cups on their own any more than Connor McDavid will. If you have David Desharnais as your number one you're going nowhere.
You need a good team to win. But it's absolutely crazy to think that all goalies are the same and don't make any difference. That's like getting a team of Justin Williams and Claude Lemieuxs and John Druces and saying "SEE! It's all good!" Having a crappy inconsistent goalie is a great way to lose cups even if you have a great team.