Earlier quoted context omitted.
No. Those policies are in place because planning makes sense. Not everywhere should be tear down and build up in all conditions. How about the French quarter of New Orleans or historic districts of other cities? This argument always shows up here and is idealistic bs.
Sure. But historic districts are not the majority of zoned land in any city. I mean, the imperial palace gardens remain in the middle of super-dense super-expensive central Tokyo, as do many other historic landmarks and districts in dense cities (and non-historical but significant landmarks too: nobody is removing central park from NYC either). Actually, an even stronger argument is that, well, cities need more than…
There are a couple of ways this can fail as a result of various loopholes, but it is, in general, a good approach.
Further, you can offer developers tax credits for densifying infill development since more of the infrastructure is already in place.