F-Droid is really just a group of volunteers, and as such doesn't have a single view on the issue. There are currently some discussions running on our forum:
All I can say is that so long as an app is fully FOSS (that is, no binary code downloads for extra functionality, paid or not), then it's allowed in the repository.
Well, I now know a bit more about this; the apps remain libre and open source, and I have no issue with that. I actually like the idea of paying a few cents per app, so I did that as well.
Regarding F-Droid, the latest version remains freely available from there, so I must say that I am a bit confused about what you're saying 😀
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