Aside from the sense about that Googler’s document, this is good on what being a high-level engineer means. Confirms for me that, really, I’m a hobbyist.
Yes, this is the thing. Our entire industry is not at all diverse, so blaming conference organisers is, often, just avoiding the actual issue. No one’s said “I’m never using [company]’s website/product because they’re nearly all white men.” Because then they’d hardly have any websites/products to use.