I'm quite pro-Frost and I'll agree with this, but I'll caveat with two things:
Frost has missed a couple slam-dunk goals by an inch. Gaping net, puck on stick within a foot of the goal line, wide. He's created and had opportunities, and if he converts a couple of those his season and stat line so far are a whole different story.
Two, I think Frost is a somewhat fragile personality who needs to have his confidence built up. I think missing chances like that feeds into the cycle--he's off mentally, so he can't just jam a puck in the net, and then he spirals a bit deeper. That's not an ideal trait in a pro athlete, but his entire Flyers tenure has been a study in how NOT to develop a player who isn't innately confident like that--even before Torts (Vigneault lol) but accelerating dramatically in the Torts era.
Now, shit on the player all you want, but one of the functions of a pro sports team and coach is to find ways to get the most out of your talent based on what they respond to. You can't ONLY work with "your type of player." But Torts will just keep repeating the same tactics that don't work for that guy until he's a burnt-out throwaway.