I find the new Siri “selection” feature for music services to be frustrating. I use Dark Noise at night to sleep or when I’m writing to aid in my concentration. After using Dark Noise, when I get in the car and tell Siri to play “x”, I’m told that she can’t play that in Dark Noise so I have to start prefacing my command with "In Apple Music play “x”. This is a new feature that is a step backward. Just give me a toggle to select my default music player which is always used unless I explicitly ask for something to be played in other service and then reverts back to the default.
I have a recent post here saying that Siri seems to be worse after 14.5, although I haven’t noticed what you are talking about. I will be on the look out.
As I said in my post though, the thing that is driving me nuts is the skip command. I used to be able to say “Siri, skip two minutes” to jump ahead in a podcast. Since the update that makes it skip to the 2 minute mark of the podcast. After years of saying skip, this is a hard habit to break for me. Multiple times a day for the last week I have said skip and lost my place in the podcast I am listening to.
Maybe the change is a good thing, but it’s frustrating so far.