https://blog.mozilla.org/addons/2022/11/17/manifest-v3-signi...

> Towards the end of 2023 [...] we’ll decide on an appropriate timeframe to deprecate MV2.

https://blog.mozilla.org/addons/2024/03/13/manifest-v3-manif...

> Firefox, however, has no plans to deprecate MV2 and will continue to support MV2 extensions for the foreseeable future.

Seems they changed their mind in 2024.

Firefox declared that they intend to keep MV2 support[1].

[1] https://blog.mozilla.org/en/firefox/firefox-manifest-v3-adbl...

No, they do not: https://blog.mozilla.org/addons/2024/03/13/manifest-v3-manif...

Based on what?