In both cases I'm going to look at the reviews.
In the case of a lot of 5-star reviews with little to no content, I'm going to assume they've either gamed it in the way being described upthread or that the reviews are fake, which renders the rating and number of reviews irrelevant to me.
I'll definitely look at some 4-star reviews to see what people who liked the app in general didn't like. I'll also read some 1-star reviews to see if there are any red flags/deal breakers like... the pestering behavior being described upthread.
This type of behavior is unlikely to succeed with me if I find out it occurs. Not everyone does it and "it makes me more money" might be a reason someone would do it, but it doesn't convince me I should tolerate it. I'm extremely intolerant of any behavior that shows disrespect for users and doesn't value their time.
This method could succeed with me if it was a one-time purchase and I was unaware of the behavior. It won't succeed with me if the app is free and offers IAP (something I tend to avoid anyway, though) or if it is a subscription-based app.