mm wrote:

Chinese drywall presents no problem if properly installed (2 coats
oil-based KILZ or equivalent on all sides).

Did the drywall come with such a warning? If maybe it did, did anyone
in the construction crew read it? Did they do anything because of it.

If the builders don't install the drywall properly, how is that the
drywall's fault? Nails don't come with instructions: "Pointy-end first."


How often, if the owner isn't there to insist on it, will the side not
seen be be painted at all, or the edges. How often does the owner
know it's supposed to have TWO coats on all sides?

I don't know. Reputation, skill, and experience of the builder maybe?


A lot of new houses get a light coat of spray paint on one side after
the walls are in and before the non-wood trim.

And how many install sheet-rock in a basement or garage or a home they
can't afford to complete and don't paint it for years.

And how many wire this unfinished basement with zip-cord?


Your sentence is like saying bald tires present no problem if they are
retreaded.

Exactly!


Or, poison gas presents no problem if all present are wearing gas
masks.

Exactly again! I think you've got it.