Yes.
https://support.chess.com/article/128-what-does-insufficient-mating-material-mean
there is no way to checkmate a king with 1 or 2 knights only without any other piece than the king on the opponents side. funnily, if he had something else it'd be possible to do so, because the other piece could potentially block an escape square for the king. with two knights, the opposing king always has an escape square or get stalemated, guaranteed.
It's not a 100% draw, but calling it a draw by Chess.com is better than trying to checkmate the opponent over hundreds of years with the two knights.
It's technically possible to mate with two knights but it's not forceable in most situations. If the game was under FIDE regulations, it could continue until another draw condition happens or someone runs out of time.
Chess.com ended my game because of insufficient material even when I had two knights…