Good gosh no.
That's like saying 'cars were better made in the 1950's because they used tons of steel'. Like they were 'heavier and more robust' - but that doesn't mean better.
Foundations are way better, more robust, especially weatherized. Windows today are like magic compared to windows 100 years ago.
What we do more poorly now is we don't use wood everywhere, aka doors, and certain kinds of workmanship are not there - like winding staircases, mouldings - but you can easily have that if you want to pay for it. That's a choice.
AI is power and leverage, it will make better things as long as it's directed by skilled operators.
Yes, houses got better because materials got better. Windows are better. But the construction of the houses is worse.
The precision of how the wood or material meets is worse (when cut at the site). There is a huge amount of sloppy work in modern construction.