Would not having 30 dresses make you unhappier, if you have time to spend doing things you enjoy instead of consumption being the only thing you have to show for all the time you spend at work?

It feels like you're attributing to me an opinion that a decrease in the availability of goods and services would be a universally bad thing. I never said that.

For my own part, I don't own much excess stuff. I use whatever clothes I buy until they're worn out, and the only furniture I own is a couch, a bed, a kitchen table and two chairs. However, I do enjoy climbing, hiking, and skiing, all of which require a bit of equipment to do. Lower productivity would likely imply that those things become less available/more expensive.

As for food: Saying that it "has the amazing ability to just grow without much human intervention" just makes you seem unaware of the fact that loads of people would literally starve if it weren't for modern farming equipment, synthetic fertiliser, preservation methods, and transportation. For people to rely on "a small garden for some of their food" is not a practice that works at scale with the population density in the world today. There's a reason the population on earth was relatively stable until the industrial revolution, and has grown exponentially since: Modern technology makes it possible for us to feed very many more people with a lot less land and resources.

IT services: Yes, I'm on a platform run by volunteers. I'm on it using hardware that was built by workers, with materials developed, extracted and refined by workers, on electricity produced and distributed by workers, over an internet that is possible because of workers. All these workers are reliant on their own corporate IT systems in order to be as efficient as they are today. You can't just extract the last link in a huge web of dependencies, and act like it could work on its own.

Anyway, all these things are side-notes. My primary point (which I still believe stands) is that we cannot expect to reduce productivity across the board (i.e. everyone works significantly less), and expect that there will not be a price to pay. Whether that price is worth paying is an open discussion, which I haven't really decided what I think about myself.

You seem to agree with my last point, which was that

the distribution of wealth in society, and how it’s shifted the past 20-50 years is more concerning

That is: The major problem we have today is that the increase in production we've seen the past 20-50 years has primarily benefited the wealthy. This needs to change. Once we have decent wealth distribution, we can make an informed decision on whether we want to reduce our total productivity in order to have more free time.