I've been using StoryGraph since it came around and really enjoy it. I've looked at BookWyrm, but I haven't considered switching yet.
The article mentions the WaPo connection to Amazon and its board, as they should, but I'm surprised to see this particular topic there, too.
This particular paragraph is disingenuous in its characterization of what's going on with Reddit, though:
There was also a concern that any major changes to the platform could scare people away. One former employee compared Goodreads to Reddit, an 18-year-old internet forum where users are revolting because of modifications to the site. “People feel like they can’t anger the community,” the former employee said.