When I was a kid we used to go camping a lot in a pop up camper and it was a pretty good camper and gave us lots of camping and went many miles for us.
I now have a newer pop up camper that I take camping when it's only me and it's perfect for 1 or 2 people camping who only camp occasionally.
However Pop Up campers are not really built very good for cold weather as they can let some cold air in so I wouldn't recommend a pop up camper when camping in cold climates.
But for summertime or spring time when the weather is warm they're great for camping in.
Pop Up campers are also great because they're very easy to tow behind just about any size vehicle and even a small car or truck can tow a Pop Up camper with ease.
So if you only need a camper that gets minimal use and mainly use the pop up camper in the warmer weather they're great.
You can use the Pop Up camper in colder weather but a more sealed off camper is better for cold weather.