You missed the point, he didn't mention history in general, but specifically "Finnish history".
In this respect it's not about British colonialism but more about about Russian imperialism / Stalinism (see Russo-Finnish war 1939).
And even with Linux, it's not Linus' personal project anymore, hasn't been for decades - it's a global project with developers from many countries with their own views and biases. Being BDFL doesn't mean that your geopolitical agenda becomes the whole project's. Or at least, it wasn't so blatantly put on display previously that that was the case.
A high profile project like Linux doing this will have long term repercussions for how open source operates globally.
Open source is fostering collaborative environments, while russia as a state is destroying them deliberately. How does that fit together?