Siri on Homepod no longer recognizes simple commands

I play music on a Homepad a lot, and up until a week ago or so I used be able to say "Hey Siri, play CPR Classical," and Siri would respond "Now playing CPR Classical, provided by I Heart Radio." Now when I ask Siri the same thing I get "Okay, I will play some songs like that," and Siri plays some random orchestral music.

Similarly, if the Homepod was playing Apple Music and played something I didn't like, I could say, "Siri, I don't like this song." Siri would respond with something like "I'll tell Apple Music you don't like this song," and then skip the song. Now when I say the same thing, I get "I found some web results you can view on your phone," or somesuch.

Again, everything was working fine up until a week ago or so. Is this Apple "Intelligence" at work or what? If anyone knows what I can do to fix this, I'd appreciate your advice.