I don't see anything wrong with what he said. Max and Vanek played poorly. They're not depth guys. They are pretty much the team's offense and were given opportunities to produce (moreso Max). Did not like what I saw from both players. I like that Guy didn't mince his words.
Sure they didn't play particularly well, looked bad at times, but that's not what Guy said. He labeled them. Vanek I can get, because he's been around for a long time. Max is just 25 and went through his first PO run. Lafleur scored 4 goals in his first 29 PO games. I'd imagine he fully knows one PO does not make a player.
Anyways, clearly management didn't like it either, as he downplayed his words the following day.