I agree.
The guy obviously has some linguistic talent and loves languages, but I highly doubt he's actually fluent in more than 2-4 of them (in 10-15 years - maybe, but not now). He probably can be considered an intermediate or even an advanced student in some of them, but it's a far cry from being fluent. For example he's made a few serious grammar mistakes in his Russian phrases, and I wonder how many mistakes he would have made in an unscripted or more complex text. On the other hand his pronunciation is very good, the accent is very slight and I'm sure he'll get even better with practice.
It's still inspiring to see a young man who puts his mind to work, and it's something to be proud about. But using false and boastful labels cheapen his achievements a little.