See also: hiking the minimum wage (possibly the most obvious example of academic corruption), rent controls, taxing the rich, etc.
There are a number of reasons for this, but the primary ones are 1) economists also respond to incentives and those think tank jobs pay really well and 2) prestige in the industry is also a commodity - a commodity which can be bought and sold. The level to which money talks in this industry is reflected by the wages - always higher than all other humanities.
As an example the freakonomics guys popularity are to popular economics what k pop is to music: a slick, highly refined, marketed product from a superbly well oiled marketing machine.
That said, your 3 examples are very well studied, and rent controls are completely different from taxing the rich and hiking the minimum wage.
I’m more skeptical of the minimum wage one, I think the details there matter a lot, and raising the minimum wage too much too fast can indeed be worse for just about everyone.
But rent control? Really?
It’s also interesting to me how a certain segment of the political persuasion simply cannot resist the allure of price controls, and no amount of data or historical experience seems to convince them that it’s generally a bad idea.