My only concern is that the licence allows them to update the app to a closed source version at any time

If you're just looking for pro-hamas posts, hexbear's got you covered:

https://hexbear.net/post/932642

ydotool

Veganism is not a dietary preference. Veganism is a philosophy and way of living which seeks to exclude—as far as is possible and practicable—all forms of exploitation of, and cruelty to, animals for any purpose. Which happens to include food.