> This library is licensed under the GPLv3.
If the intention was to make it easier to spread the word, you've already failed.
Anyway, this whole library should have been a copy-pastable snippet for a dialog or toast (what's with the duplicate code?); the only value added is the translation, which most app devs already have a pipeline for.
The code part is so trivial that I suspect it doesn't even meet the legal bar for copyright protection in many jurisdictions.
OP, I recommend switching to the LGPLv3. It ensures users remain in control over your part of the code while avoiding this type of reaction.