Breeze block and plasterboard are sjidt but warm. So you pays your money and you takes your choices.
Todays housing has to meet certain insulation standards. They also meet engineering and safety standards that just did not exist in the good old days.
They are also built in areas our ancestors avoided for good reasons.
The main problem is the availability of qualified workers. And paying them sufficiently for them to do a good job. On a poorly run site the quality control can make a difference in the pay packets of concientious workers and the careless of one or two hundred pounds a week.