There's plenty of negatives for Google Maps. None of those are deal-breakers, while the negatives of other apps are deal-breakers.
Negatives of Google Maps:
- Awful graphical interface
- Bad performance
- Ads
- Offline maps could be better implemented
Features where other apps fail, but Google Map works well:
- Unable to zoom or pan map because of janky response. This core feature needs to be right, or the app is unusable.
- No public transport integration. Makes the app unusable if you're on vacation in a different country without your vehicle. Apple Maps fails hard on this. Which is when you are most in need of good maps.
- No routing or bad routing, or routing only for cars and not for bicycles or public transport. Deal breaker for everyday use. Organic Maps has awful routing.
- No business information or outdated business information. For example, Apple Maps will ignore or reject updates which you as a business send to them, using the Apple Business account.
- No or few or outdated photos for businesses. Reviews aren't that reliable, as you mention. But photos will tell you many times what you want to know.