In the past I've heard that TripAdvisor has 60% market share for local reviews in the UK. Did Google Maps really climb that quickly? Are Instagram and TikTok not shaping tastes in London too? I feel like she might be assigning too much power to it just because that's what she used.
That's not to say I don't have gripes with how Google Maps works, but I just don't know why the other factors were not considered.