Is it acceptable to use proprietary software (platforms) to promote software freedom?

[Adonay Felipe Nogueira]

Yes, I was replying to Mat. :)

Also note that correct copyleft defense should be
collaboration/community-oriented, not based on judiciary/litigation
pressures ([1][2][3]). :)

I wonder however... Does my message appear correctly threaded in your
email client? For me, it does.

[1]
<https://sfconservancy.org/videos/2015-01-15_Bradley-Kuhn_Future-of-Copyleft_LCA-2015.webm>
(CC BY-SA 4.0).

[2]
<https://media.libreplanet.org/u/libreplanet/m/copyleft-for-the-next-decade-a-comprehensive-plan/>
(CC BY-SA 4.0)

[3] <https://video.fosdem.org/2017/Janson/copyleft_defense.vp8.webm>
(CC BY-SA 4.0)