How is it possible that I can't connect to a new HomePod with my brand new Macbook?

It's really too bad, I was about ready to go all in on the Apple Ecosystem but I obviously can't afford to upgrade everything at once. I have an older iPAD mini 3 and a new MacBook Air. Was planning on switching back to the iPhone when I am due for an upgrade and convert all of my families Windows and Google devices over to Apple, as well as all of my "Smart Home" devices,but if I can't use my new Apple product to connect to my new Apple product then this is just plain unethical. So How do I fix this? Take back my gear and go all in on Linux? Does Apple have an answer that doesn't involve me paying thousands more for new equipment?