Earlier quoted context omitted.
Ok, but first: is it financially risky right now to own properties? No, based on the data we have. Second: can renters be hurt even more? Are landlords the most vulnerable people right now? The situation is pretty awful right now, while at the same time there are people whose sole contribution to society is "owning flats". And I agree on increasing property taxes (any progressive taxes over capital would do).
I think these are understandable and well intended questions! But they also makes it seem like you're not very familiar with standard economic analysis. I would encourage you to read The Rent is Too Damn High by Yglesias which is by an american (leftist) who I think has a much better set of ideas for improving the lives of renters than "occupation friendly" housing regulations and other "zero sum" ideas. And yes, buy…
I wonder if the difference could be that the policies that he advocate would require bought and paid for politicians to act while squatting is something that an individual can do?