IDK how anyone could accuse Mets fans of "getting ahead of themselves" or anything like that. Read the posts here, go to Amazin' Avenue, MetsBlog, wherever. Pretty much every post ends with, "This is so much fun until [something cataclysmic happens] and we're back to normal." Mets fans are some of the least likely fans in sports to get ahead of themselves given we've seen so many collapses before and that part of us being "Amazin'" is that we do some impressively awful stuff, as well.
I texted my old man last night (who was a Brooklyn Dodgers fan when he was little, until they moved, and has been a Mets fan ever since 1962). He's seen some stuff. His response to my semi-optimistic text: "Starting pitching has settled in, b-pen has improved slightly. They have some bats so anything is possible. Concerns- Cano was heating up and they have a bunch of guys hitting below .200 (talking about Guillorme, Altherr, etc.--he doesn't understand they're emergency backups). Not much bench. And then they have terrible defense and baserunning. So it will probably all fall apart."
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He's been watching the team for 57 years now or whatever it is. He knows what's up. You grow up a Mets fan, and you just know the wheels are about to fall off at any moment. There's no getting ahead of yourself as a Mets fan.
That is, unless you want to listen to WFAN or something. But the people that call in there seem to constantly be in a battle to be the biggest dick on the radio waves at any given moment. They're not representative of anything.