Convenience isn't bad, it's just that minimal convenience is oversold.
If I'm in a bath I can use my phone. A regular bluetooth speaker is sufficient. There is no need for a voice assistant.
A long shower is not relaxing, that's the opposite. It's not relaxing to stand in the same place for a long time. I can't even hear the music that well in the shower through the speaker, there is water in my ears.
Also maybe try a longer shower or a bath. Its usually the most relaxing part of my day and I would hate to be in and out in 5 minutes