What the person you’re replying to means, is that Apple Music was added on top of iTunes as a new service rather than iTunes being scrapped completely. If Google were to do the same thing, then google play music would still be around and not be getting killed in favor of youtube music.
That’s a fair point. Though in this case aren’t google play music and youtube music substantially similar services?
Google’s reputation is that they will have 2-3 services with the same functionality. Whereas there are pretty legitimate business reasons you want want to make a streaming business distinct from a legacy content purchasing business.
Also I just happened last week to rip in Apple Music some of my teenager years CD before packing and storing them.
This is still an option. Likewise the playlists I created on the go on my iPod Nano in a 2008ish trip reliably got migrated from versions to versions up until now.