I had a roommate who I told, if he ever got an Amazon assistant, I'd smash it with a hammer. I don't get it either. There are open source alternatives if you want to setup your own assistant that doesn't transmit all your data back to Google/Amazon/Apple.
The one caveat, I do know someone who is blind who uses the speech-to-text on her Google device a lot. She has all the fonts set to their maximum size, high contrast colors, and various other accessibility features enabled. Speach to text helps her greatly.