2 legitimate and 1 unjustified reason for Mets fans to panic
Legitimate reason to panic: The NY Mets have no pitching depth for the rotation or bullpen
Injuries have decimated the Mets pitching staff. Verlander has missed all but one start. Jose Quintana hasn't pitched yet. Scherzer is dealing with whatever he's dealing with. Carlos Carrasco had been struggling and he's on the Injured List currently. The only starter from the projected Opening Day rotation who has not spent time on the Injured List is Kodai Senga, who has his own injury concerns. The Mets have been trying to keep him healthy by pushing his starts back which has worked, but has also forced them to do things like use Joey Lucchesi on short rest.
One strength I expected this Mets team to have was pitching depth, particularly in the rotation. Both David Peterson and Tylor Megill were very effective last season as the Mets sixth and seventh starters. Peterson had an ERA well over 7.00 and is now in AAA. Megill has been mostly fine, but has completed six innings a grand total of one time. That is a problem.
Elieser Hernandez was supposed to fill the Trevor Williams role but he's hurt. Jose Butto has been ineffective in his chances. Joey Lucchesi had one good start but has just 13.1 innings of work in his last three starts.
The rotation being a disaster has forced the bullpen to pick up the slack. Unfortunately, there're injuries there too. Edwin Diaz is done for likely the entire season. Brooks Raley is on the IL. Other depth arms like Bryce Montes de Oca, Sam Coonrod, and Stephen Ridings haven't thrown a pitch for the Mets this season.
While guys like Tommy Hunter, Jeff Brigham, Dominic Leone, and Jimmy Yacabonis, and Steven Nogosek are fine in certain situations, they're all in the bullpen at the same time right now. Drew Smith, David Robertson, and Adam Ottavino are the only legitimate trustworthy arms the Mets have, and some fans don't even trust Smith at all.
The bullpen has held up better than anyone could've asked for, but the rotation gives no length and the bullpen is decimated with injuries. The Mets pitching and lack of depth should absolutely be a reason for fans to panic.