Precisely. Regardless of your political leaning, Congress has been playing hot potato for a long time. Instead of actually creating rules or regulations, they do nothing and let the administration or courts decide. That way they can go to their constituents and beg for votes or contributions to fight the same branches that they relinquished power to by not doing anything.
A large part of the Republicans' strategy is to appoint partisan judges & let them legislate from the bench for the rest of their lives. Talking up thread about "the biggest problem", this is probably it. In the context of climate change, recently we can see SCOTUS shooting down environmental protections. This happens in lower courts too, but those don't make national news.