I won't trust no tracking if it's non free.
I know I will sound extreme (although I think it shouldn't be the case in among developers) and no offense, but this sounds like a happy outcome to me. I believe proprietary software to be unethical. I'm not interested in being proposed non free software. The software industry should figure it out and start respecting its users.
However software funding is a real concern and I do believe there's room for some set of builtin solutions allowing free software funding beyond a donate link.
There are many ways to fund free software. I'm not saying it's easy but there are many open source businesses now and as a developer I decided to join one of them.
Support, consulting and paid (but still open source) paid features are some options. I don't think anybody would remove a license check in an app sent to f-droid if it's free software.
Now, I genuinely thank you for having considered an alternative to Google for distributing your software.
I know it's hard to build stuff and bootstrap it. I'm with you on this.
In f-droid, you can still add third party repositories and I heard it's getting easier for users. Not sure it is easy enough.
Now I'm totally aware only free software doesn't cut it for most people yet, and fdroid will not suffice. Most people will do with the play store, but some will use fdroid as a store of "trusty" apps and resort to the play store if really needed. I know people doing this.