The promises from this are mostly for the construction. There are some potential gains for architecture as well, as some ideas might be a lot easier with this technology than with more conventional "put one thing on top of the other" building styles.
But for everything else, this seems like a very bad idea.
Aesthetically: who wants to have these materials? Their look and feel are not good. I like wood, the real thing, not the plastic version - the warmth of the feel of it is far superior to plastic, for example. Sure, you could clad the house and add flooring, but then we're limiting this to instead of building a house to be a framing solution.
Environmentally: The environmental costs of construction of a house is amortized over the lifespan of a house. So even if this may be cheap, perhaps it actually ends up not being this. And also, this will probably emit a lot of microplastics, which for me would alone be enough to say no thank you.
Insulation: I live in a country where houses need a lot of insulation, and this solution can't do that. So either you add extra steps which sort of defeats at least some of the purpose, or live without it. That said, just because this is a problem here, there may be other parts of the world where it wouldn't be - "doesn't work for me" is not the same as not useful for anybody.
Ventilation: Do you want to live in what is essentially a big plastic bag? House construction seems to move towards semipermeable (is that the right word?) materials where the humidity of the inside is allowed to escape. You may be able to achieve this by adding ventilation holes, but that might lead to problems with bugs and maybe even larger animals. You do not want restless owls in your roof.
Some would say that this could be useful for office buildings instead of houses because of the problems above. But I spend a quarter of my life in the office, so I want the same standard of "living" in the office as in my house.
There are even more problems, but these are the main ones. With the possibility of this being a case of old mans' "all changes are bad" thinking, I'm going to give this a hard pass.