I believe there are some big problems that can be addressed with technology and big problems with technology itself (see internet centralization and spying)
I would love to try tackling those big problems, but I have the concern the public is not worried about it at all.
And it seems way easier to work and be successful working on the next Snapchat for puppies.
There are a lot of people working on cool tech for important problems. You just don't hear about them because its much easier to share the latest silly app with your friends.