Gender Discrimination in the Hiring Process?

https://www.reddit.com/r/clevercomebacks/s/nCtvTlEuAT

Assuming that all the employer knows about the prospective employees is her name and assumed gender, is the employer's comment about bodybuilders discriminatory (in Canada)?

"Unless you are a bodybuilder I fear that you will not be able to handle the work load."

Or does he cover his ass by suggesting that she could still contact him if she thinks she's up for the task?