People who need access to the internet do have it. I think they route through China.
Anyone else using the internet not doing work for the North Korean government would be murdered if caught.
In North Korea they have the "intranet" which is an internal network of learning resources you can use at the local North Korean libraries and schools! It is all propoganda.
Not everyone who needs access has access. A select few who are at the mercy of the dictator do to do his work.
Some people have been known to try to sneak across the border and meet Chinese people in the woods to exchange goods.
Some people send balloons with notes from the outside world over the border to reach people inside.
Perhaps a select few have some garnered enough information about how to use the internet without getting caught they are willing to risk being murdered to do so if they find something dire enough using the internet for but to say people who "need" the internet fire up wiregaurd and call it a day before watching their daily stream of YouTube influencers is an understatement to say the least...