In my experience the majority of users do not tend to share their true feelings about apps – because it is not convenient to do so. One of the most popular apps, Clash of Clans, crashes constantly, several times a day. The developers, Super Cell, get 100s of reviews a day, mostly 5-stars and very few 1-star reviews. You really have to dig to find reviews about the crashing.
Unfortunately Apple has set up a horrible peer review system that is severely under utilized. It takes users great effort to write a review, good or bad. It is far easier to say nothing, or simply delete the annoying app. The developers are left completely in the dark. It would be best if Apple provided a way for users to review the app while still in the app! People will only act if they don’t have to leave the situation.
It’s horrible because new users DO read the reviews and decide whether to download or delete your app. Developers have been pleading with Apple to fix this for years. Apple is too busy building data centers or reducing the weight of the next iPhone.