There are often very real issues with inequality in transit and bike infrastructure. But if we can't build anything that might even have the slightest possibility of not being 100% fair we're never going to build anything and we're just going to be maintaining the status quo.

Even if the author has a point in some sense, it's also absurd because you'd have to be insane to think that poor people, the disabled, immigrants, etc. are better served by the situation in the us.

This is sort of like the opposite of (but very similar to) concerns about stuff like bike lanes in predominately minority areas resulting in gentrification. I'm not going to say it's definitely not a real thing. But the solution isn't to not build any improvements that could help those areas just because that would make it more attractive for gentrification, because that just means keeping them shitty for the people who live there. It's to just build the fuck out of them everywhere, so that places that have them don't automatically uniquely attractive targets for gentrification.