No, there are plenty of other examples (just in games alone) to write off as a mere one-off oversight. It certainly seems targeted since they've targeted religious apps that don't even have any explicit content.
For an app store that is supposed to advocate for freedom this is disturbing and very off-putting. The answer is not submitting a PR to enable even more censorship.
Who is "they" here? The person who opened the PR? The person who wrote the NSFW definition? The moderators correcting the mistakes?
> The answer is not submitting a PR to enable even more censorship.
It's not censorship, you can still install the apps to your phone. You just cannot promote them to impressionable audiences like children, or pretend it is appropriate conduct for something like the workplace. Your same logic could be used to argue that porn apps shouldn't be labelled as NSFW, or that gore and shock content is free expression.
F-Droid is not (and will never be) compelled to host the tools of evangelism. You don't need F-Droid's help to reach your audience. I'm a proud F-Droid user and defend their stance wholeheartedly.
"You just cannot promote them to impressionable audiences like children" - the fact that child has device is problem not the fact that device can access information.