Jarry was the best goaltender available in free agency. Remember, no major trades involving goalies really materialized. So your options were:
1. Jarry
2. Frederik Andersen, who has an injury history and then developed blood clot issues this year.
3. Joonas Korpisalo, who has been awful in Ottawa.
4. Semyon Varlamov, who stayed with the Isles
5. Backups like David Rittich and Laurent Brassoit, who don't play more than 20-25 games per year
6. Marginal goalies like Antti Raanta, MacKenzie Blackwood,
Was the deal too long and too rich? Sure. I think we all said that at the time. Jarry had the leverage.
As far as the confidence thing, I think that's new. It seems like Jarry has been responsible for more deflating goals allowed this year than he has in the past, even though that was always a weakness. He's really come up short this year, so much so that it's hard to believe he's also posted six shutouts.