Is there any point in going into mining now? I only see news about miners surrendering and selling their equipment

I think the topic of such a dissertation would be very broad. If only because of the enormous amount of statistical research that needs to be done. Statistics is not an easy way to write a dissertation, one of the most difficult assignments that many people face. You can make a lot of mistakes or just get tangled up in endless numbers. When my brother was writing his dissertation, he had a huge statistical project that took up most of his work. But he found experts who helped him https://www.bestdissertation.com/services/stat-project.html .
I think statistics will also take up no small percentage of the work in this topic. In order not to fail, I would advise you to do as my brother did - go to experts who have been working on such projects for years.