Don has made plenty of political posts with releases of Notepad++:

https://notepad-plus-plus.org/downloads/v7.6.2/

https://notepad-plus-plus.org/downloads/v6.7.4/

https://notepad-plus-plus.org/downloads/v6.6.4/

He's using the platform he's got to push a message he believes in. I'm not in either camp here, but Notepad++ is particularly useful software, so I'm happy to keep using it.

everyone is entitled to use their platform however they see fit and you don't have the right criticize for that decision. you can abstain but you don't own the work so you have no claim. on the other hand you are welcome to build your own platform and use it however you see fit as well.