The 70s mostly happened because of supply side shocks in oil again and a few other things. But I’m really not sure what you mean by wage inflation. Nurses aren’t asking for more money because they can due to reduced supply, they’re asking because their wages have been cut the last decade. You don’t need to strike if you’re in a shortage field, you just leave and get more money.
Truss was not correct, it’s fringe economics of the sort people were worried about with Corbyn that relied on massive borrowing and flimsy evidence for forecasted growth without investment.
House prices are indeed related to supply. Since Thatcher brought in RTB in the 80s supply has dropped off a cliff. Private sector has always pretty consistently built 200k houses a year or there abouts, what changed was local authorities were no longer also building houses.
You’re very clearly a supply side economist, but that’s not taken seriously by actual economists, hence the market reaction to Truss. It’s not 1980 any more and it’s a polticial rather than economic position these days. Look at economists hired by the businesses that need them, you won’t find many supply siders there which tells you a lot.