Phone memory is terrible these days, I have a huge collection of Mp3s and wav files I don't want to give up, despite bluetooth stuttering at times in my car.
Putting low onboard memory on modern phones should be a crime when USB sticks with 128GB plus are selling for $15... They do that to boost streaming and data charges... It's like car makers intentionally putting a smaller gas tank in a car if carmakers also owned the gas stations.