I concur with sibling commments that while a net positive a github profile is be unlikely to be given much weight at a FAANG company. Unless maybe it shows experience on something directly related to the particular team you're applying for. Performance in the interview is really what matters.

I also concur that getting a referral from an any employee that you might meet is the better than just blindly sending in your resume, though not as good as a strong referral (i.e. someone you've had direct experience working with before). You will get more attention from the HR side and the employee referring you will have a better idea of what teams will be relevant than the HR people will.