First of all, the "good things are actually bad" school of thought is, well, bad and terribly counterproductive.

Second, what I am telling you is that it is NOT a major barrier to affordable housing, because 1) wage earning home owners don't intrinsically have a serious material interest in their houses having a high value, because most people are never planning to move out and sell it anyways, and the even for the people who do as a retirement plan or whatever, it's nothing deep, and 2) they are nowhere close to being the significant barrier, the significant barrier is the landlords, the banks and the real estate companies. Assume that a leftist party or whatever you include affordable housing in your program. The landlords are gonna be pissed at you of course, but it is not a major concern for the wage workers who own houses, EVEN those who are planning to sell it etc, when the rest of your program is nothing but good stuff for them. Similar to how, say, switching to renewables may make many workers unemployed, but it's not them who is the major barrier to that, and they wouldn't have a problem if your program guaranteed they would find a better job afterwards. So if there is opposition, it is a matter of ideological brainworms, but this is a very broad issue that afflicts everyone regardless of background. Bottom line, their material interest is NOT directly opposed to a leftist program, the material interest they have in maintaining the value of their house is secondary, and they are not the people most at fault for blocking affordable housing programs. Furthermore, saying home ownership is a bad thing is counterproductive because it is contradictory to the stated goal of improving the living standards of the working class, and just looking at home ownership rates in various countries should confirm that it really isn't negatively correlated to class consciousness.