No, no it's not. Frankly it's absurd you'd even try to compare the two. Lord Stanley's Cup has over 120 years of tradition and lore associated with it. Not only that, the Memorial isn't the ultimate disc golf championship, it's just one tournament out of many. Winning the Memorial is impressive, as the winner has beaten the top players in the game, but he'd have to win every major event in a year in order to compare it to winning the Cup.
While there are over the top celebrations in individual sports like real golf and tennis they do tend to leave a bad taste in fans mouths. Since fans are often also rec players in any sport, it's usually a good idea not to act like a tool where they can see. Hopefully the money people behind Prodigy pull the team aside and tell them to keep it a little more low-key and a little less "girls softball" next time. With that said, I AM glad they stayed engaged and rooted for their teammate.