Beyond a points its curiosity and pushing existing computational techniques to their limits. Sometimes it leads to new discoveries in computational techniques or in rarer cases new theoretical work.
Long story short, it’s fun to find out new things about weird numbers :)
The problem is also that the rate of, and ease of production of terrible content far outpaces good content. So it does matter that there’s loads of junk because finding something worthwhile gets hard very quickly.
Sure the customers decided, but what about their relatives? If any of my relatives uploaded their genetic info to this, it by extension has a huge part of my genetic info too, and my consent was decided without my knowlegde...
What I'm trying to say is: I don't think comparing it to equifax is reasonable in that regard.