Don't worry; we're not talking about the Canadiens player but rather his father, who shares the same name. Indeed, the Slovakian's father was present on Tuesday night, and one can assume he must have been very proud of his son's three-point performance in his first NHL game.
It's obviously without malice that Mr. Slafkovsky did this, and it's not something unforgivable, but he should never do it again.
This is the case throughout the NHL. No team accepts someone walking on the logo in the locker room, no matter who does it. A valuable lesson for the Slovakian family and undoubtedly a humorous moment.