Can someone explain to me why this is consumerism? I'm not going into YouTube to watch, due to the ads, but I have one of these (not a Stanley but very similar) and it has actually helped me buy less drinks and drink more water.
Think of stamp-collecting, but instead, you start collecting algorithmically controlled limited-edition thermos flask. The goal of these bottles were to be reusable, but people have started buying them as status symbols, just like Nike - they're not going to be used, they'll "rot" on the shelves. People are not buying them because they care about the environment, but because FOMO.
Blaming a gender or ethnicity for something that was clearly a result of consumerism culture, and a marketing tactic that exploited this manufactured culture. You're missing the point here entirely.
You can look at the massive pickup trucks that are so common in North America and say "men once again being a blight on this planet", and it will be the same type of problem.