As online comment sections propagated throughout the web and faced people-related scaling issues, mainstream media sites become a popular example of low quality discourse. Some chose to invest meaningful resources into their comments, but many did not.
In recent years, an assortment of news publishers and noted publications have closed their comment sections. I don’t necessarily see that as a big deal or even a bad thing. There’s an ebb and flow here. Many people rush into tools without enough thought, then wonder why they don’t work. There is an eventual correction as they find its not for them or something shinier attracts their attention.