Wither ACM? Publish and Perish?

I don't understand the article wrt https://news.ycombinator.com/item?id=46313991

https://dl.acm.org/openaccess

I agree the ACM should become more of a member organization. But the fact that they went open access and now all of the research is freely available to all is absolutely amazing.

The article makes them sound like they went full Elsevier and Springer.