Sure, I own a smartphone, it runs just plain android but without any google accounts or services because I do not agree to Googles terms of services. I never did, and as an European citizen especially with recent developments I feel that has been the right choice.
The thing is, without google account there is no play store, and without play store I am not able to install the majority of apps - no banking, no parking, and all the other services people complain about in these threads.
This is my choice, and I stick to it. I'm also pretty vocal about it and complain when needed. Doctors office informs me I only can get medicine with the app? Apparently they can make exceptions when you complain, because I'm allowed to get medicine with a simple phone call. My bank tried to force me to use their app, but apparently they still do have an alternative login method when you complain. Sure, I know it's a fight I will lose in the long run, but I enjoy it while it lasts.