Solid house/Prefabricated house - Which house should we build?

Cannot confirm any of what you wrote, because we had an appointment with a company that said they have not experienced in the last 6 years of their career that a couple was so well informed (prepared) and above all asked so many questions. So I actually want to say you are partially right, it is all a matter of attitude regarding how one informs and prepares oneself.

If it were the case that people do not inform themselves, why are there this and other forums? There are also thousands of construction diaries that are read. Maybe your counterpart has not experienced much even after 6 years, but I think that the home builder under 45 is already fairly well informed.

So our consultant was surprised at how well informed we already were.

I would say anything is quite possible but I am a human, I have only slept 4 hours in the last weeks. Day and night just gathering information even at work since 2000 people work with us you also gain a lot of experience