I would not accept this template in the project though, as I am not willing to endorse usage of Facebook/Meta's websites. This is listed in the project limitations in https://letsblock.it/help/contributing
WhatsApp is hugely popular in Europe and Asia, I don't see including a filter as an endorsement.
The hubris in "That's the kind of filters I started this project for! I would not accept this template in the project though"
is just breathtaking. At least I now know not to waste my time with a project that can have such arbitrary and capricious restrictions based on the founders whims and personal biases. Maybe I don't like Facebook/Meta either but have something that requires their use - wouldn't being able to filter out the worst aspects of them still have significant value? Even more value?
Pretending things will cease to exist just because you don't like them is beyond juvenile levels of reasoning.