OP's vile views aside - this does seem interestingly politicized.

I don't know if Notepad++ have a history of creating commemorative versions. Good on them if they do. However, if this is uncommon, it's worth noticing. AFAIK, we aren't at an anniversary?

Personally, I think acknowledgements of sad events are generally a good thing. Helps remember & learn from history. But they absolutely can be propagandized through strategic use.

On another note, I really like Notepad++. I swap between it and Sublime. Both great.