He didn't initially, his reply was
> I'm not a lawyer and I'm not interested in this kind of issues.
> If you think the app, as it is with its terms, should be removed from F-Droid, feel free to reach out to them.
which I find completely reasonable. After that wasn't enough and people kept pestering him, he said that he doesn't want to deal with zealots.
That's false? https://i.imgur.com/EFIfxRF.jpg
The person writing you free (as in beer) software is not hurting you, they are trying to help you in a way you don't completely approve of.
I am a zealot for FOSS licensing.
I'm fine, reason why I posted reply is because top comment called creating an issue on a public issue tracker "show[ing] up and harass[ing] the developer". Hence my reply that the only harassment(however mild) I saw was from the developer himself, as per his right, but it still goes against the comment I was replying to.
If the order was reversed, you're right.
Some people take their freedoms seriously and "Libre" version of the app mentioning tracking in ToS is a big no-no.
From what I can see the author just dismissed two valid (and separate) issues on the matter that he does not care about it, it's his right, but in no way it was "pestering" or "harassing".
Beyond that, I think they should respect that no means no and not bother authors because they take themselves or their freedoms (too) seriously.