Earlier quoted context omitted.
A big thing for me is that Tampermonkey is not open source. And yes, Firefox on Android has an allowlist of "known working good" extensions, the reason given being that Firefox for Android doesn't implement everything the Desktop version implements and IIUC, want to a avoid users blaming the browser when something breaks because of it.
> A big thing for me is that Tampermonkey is not open source. How does that even work? I assumed that Firefox extensions were implemented in frontend web technologies (JavaScript, CSS, etc.)? Do they use WebAssembly or something, or is it just obfuscated to the point that trying to read it isn't worthwhile?
Excerpt from point 4
> 4. NON-ALLOWABLE USES OF TAMPERMONKEY
> You are strictly prohibited from, and agree that you will not, adapt, edit, change, modify, transform, publish, republish, distribute, or redistribute Tampermonkey or any elements, portions, or parts thereof, including without limitation, to any elements, portions, or parts of Tampermonkey software (in any form or media) without the Company’s prior written consent. [...]