Absolutely. It's a good thing I'm not calling for massively beefing up government then, I'm just advocating that tax laws exist & are enforced, so as to redistribute wealth, which I don't view as oppressive.
> If libertarianism would result in a great many oppressed people, any sort of centralisation of power will result in even more oppressed people.
I disagree with the implied premise that there is not a "centralisation of power" under libertarianism. While there isn't a state to have a monopoly on violence, there can certainly be a centralisation of economic power. And when we rely on money to pay rent, afford food, pay for healthcare etc, economic power is functionally equivalent to power in general.
> the worst oppressors are invariably governments
I wouldn't say invariably. Consider the United Fruit Company for example, or the current prevalence of child labour in tech company supply chains (e.g: Glencore, Zhejiang Huayou Cobalt).