I don't think this anecdote is a good way to judge bias. Companies don't always want to hire the most senior and experienced person that interviews, and that's not always a bad thing.

Google already suffers from a lack of junior people (see the post from a few days ago from a Xoogler complaining that the work he was doing was not deemed promo worthy), so it's not necessarily a surprise that the hiring bar for junior engineers would be lower - they're junior engineers.

And this law suit alleges that Google discriminated against non-diverse candidates at the most junior level anyway.