https://www.bettingsite.org/blog/paper-sports-betting-what-is-it-what-are-the-advantages-11569/
Maybe for beginners, but for those who have been in sports betting for years, I doubt that they will go in this stage. If ever they try then there will be something of a void, something is missing and that is the adrenaline of winning real money here.
Nothing is bad for those who are going to start with paper betting, but this could be just for education purposes.
And as I have said, when we gamble there are a lot of emotions involved. And it can't be replicated in paper betting. The dynamics of betting with real money is very different and it can't be replicated without wagering.