That we don't in fact have to deal with the parasites to have housing avaliable for working people

Well that's how the system is set up, not much choice. Besides direct action and organizing which is an up hill battle

we have to understand that dealing with landlords in a realistic way is a necessary evil.

https://en.m.wikipedia.org/wiki/Public_housing_in_Singapore

refuse to do any maintenance or bare minimum if required by the law.

This is the business model but they also were able to reap a lot of wind fall due to rising prices for housing.

This is art doing its job.