Depending on the price of course, I would take a Newer 2000+ home with newer electrical, plumbing, open concept over something older. Who wouldn't? Lol at a millennial in some video trying to educate me.
My house was built in 2003 and thank god I've had minor issues. More wear and tear stuff then anything else. If the foundation and framing was built correctly you should have no problems living in that home for a lifetime.
Do some contractors use cheaper possibly used material like Windows, Doors, Water Heaters, Central Air Units, Compressors, etc. Do some cut back on things like Insulation, Yes depending on the Contractor. All those things can be changed later on though, if necessary.
As far as the size go's. I agree, some people go a little crazy. I wouldn't need anything that big like what is shown in that video but to each his own.
This is not a knock on older homes. You could always find a well built older home and update it but I'll take the newer home all day if I could afford it.