It's a pretty icky thing to say, to be sure. This person set a new world record and she's receiving comments about her appearance? This woman performed an incredible feat of skill and she's being reduced to her looks. Doesn't sound like much of a compliment when you frame it like that, does it? Sounds like sexism to me.
Uhh, he just complimented her on becoming "the greatest Tetris player in the world", an achievement which is 100% unequivocally not due to being female or pretty (the machine does not care), and is not reduced in any shape or form by being either.
