Funny you'd say that: a befriended drag queen asked me: "You're a bit older than me so when you were younger all these letters didn't exist and people weren't called metrosexual, pansexual, et cetera. What did you call people who were basically heterosexual but also known to sometimes be intimitate with someone of the same sex?" I replied: "Drunk".
In understand the argument but think it's flawed. With the same logic you could argue school shootings are fantastic: they keep hundreds of people in the weapon's industry employed, cleaners make hundreds of dollars extra cleaning up all the blood and brain fluid and US funeral home directors are among the happiest in the world. No, colonialism is bad. Full stop. Just imagine what the Apache people (the US proudly named a war machine after the people they slaughtered into oblivion. As if Germany would call a war helicopter 'The Jew') could have accomplished had they not been whiped out by those weird illegal, European settlers bringing them 'civilisation'? Yes, we may never have existed, but a people of a few million would still be alive and thriving. We should not be selfish.