This is akin to arguing "nothing ever changes or improves in Liberal democracies", when policy history doesn't reflect that.
Large parties represent large coalitions, so there are more compromises and things happen slower, but they still happen. Not always for the better, as we're seeing when populists are elected.
This take completely ignores the amount of money in politics and that both parties have funding from overlapping sources which in turn represent how similar the two parties are on certain key issues such as the Palestinian genocide.
> This is akin to arguing "nothing ever changes or improves in Liberal democracies", when policy history doesn't reflect that.
Ever-growing wealth disparities, eroded rights, mass enshitification in a race to the bottom, and widespread hatred of ones neighbor over fake outrage culture war propaganda disseminated from corporate media are not a trends of improvement. They are trends of decline, unless you're of the class who has their doomsday bunker on standby.