I still routinely go to shows and I still hear new music that's exciting and relevant. I'm 52. Here's what I have been listening to that was released this year:
I'm glad that you're able to find stuff that you like. And, I agree - the prog/metal scene is still healthy. But, commercial rock used to be a very big tent, and that's no longer the case.
In the 2000s, for the most part commercial rock veered towards the aggressive, with harder/more metal elements, and even the more pop rock acts (Fall Out Boy...) went that way. Rock music used to include music you can dance to and sing along with. This was no longer the case, and EDM and Hiphop grabbed that spot.
Take a look at the Top Rock Songs Billboard chart for this week (Oct 28). Out of the 50 songs, remove the 9 (!!) Tom Petty songs. Listen to the other songs on the chart. The songs are either aggressive (Theory of a Deadman, QOTSA, Linkin Park, Papa Roach, All that Remains, Skillet, HellYeah, etc). Or they're singable/danceable songs that are barely rock built with modern synth pop/hip hop elements (Imagine Dragons, Thirty Seconds To Mars, The Killers, Walk the Moon, Fall Out Boy). What I find interesting/disturbing is that previously guitar oriented bands have tossed the guitar aside, and are really no different than other synth/pop acts that are not considered rock.
There's a few exceptions. The Foos are there, of course, the Revivalists are old school.
The rock that us cover folks still play was, at one time, mainstream charting rock. I think that's over.