It saddens me that this is considered a hot take.

Townhomes, duplexes-triplexes-quadplexes, and 3-4 story walkups should be allowed everywhere in the country

And allow mixed-use buildings by default as well. It would be so convenient to have little shops everywhere so that people don't need to drive in order to pick up daily necessities, such as groceries. That is how cities used to work until recently.

There are areas which should have single family homes, but in my opinion if you have a single family home anywhere near the downtown core of a town or city you should be prepared to have your neighbourhood turn to skyscrapers and tower complexes. It's just the way that cities need to go in order to survive. If you want a single family home you shouldn't be living in the middle or a city, move to the outskirts and the suburbs where there is more space.

Honestly, I believe that we just need to change the definition of the single residential unit so that it only restricts to residential units of a certain size. Allow townhouses and low-rise apartments in the same area. They're about the same height and their appearance doesn't have to deviate much from what's already being done to single units.

A properly made town-house making the most use of a single unit lot can easily house four families. Take a double lot and you can quadruple it by making some concessions on each unit.

People might complain about three or four story buildings suddenly popping up everywhere, but in reality most houses are as tall as three and four story buildings already. They just waste the extra height with a triangular roof. Modern materials make a flat roof work fine even with how much snow we get, and you can multi-purpose the roof as a patio space on top of that. No more yards needed to waste space not being used for anything.

the article makes it look like it’s evil not to allow promoters to replace single-family houses by massive skyscrapers of 12+ units on a land that is surrounded by single family homes

That's because it is.

There's a housing crisis on. When my kids grow up they're going to either live in my basement, their cars, or Texas. I don't care about you wanting to carve out the bottom of Maslow's hierarchy of needs to decorate the top.