I'm not convinced that that's true, and even if it is a huge chunk of population (world, US, pick your area, it applies broadly) keep fighting to regress us to these periods.
People complaining about rules they don't understand is in some sense as old as the existence of rules, but the internet has dramatically increased the number of people who consider themselves experts on politics, healthcare, construction, electrical code, and every other topic on the sun, and who are proud of ignoring the science and the rules and who go out of their way to avoid permits, inspections, etc.
At the same time a significant chunk of the population works to defund and defang all government, preventing the existing rules and codes - labor protections, fire protections, food safety protections, etc. - from being adequately monitored and enforced.
So you have a huge mix of things which are old and degrading, things which were never built right, and things which people are actively modifying in dangerous ways. People have a false sense of confidence build during the years where we were enforcing these rules; I do not believe that confidence is still warranted.
This isn't helped by actual bad rules and regulations on the books. Some minor examples are the prop 95 warnings on every damn thing or the way CAFE standards work to encourage the sale of more pickup trucks. I don't blame some people for wanting to scrap the whole regulatory system after encountering enough of these.