I was on GoodReads back when the lying owners sold out to Amazon while pretending that Amazon was the enemy in order to get free labor out of the users. And I was part of the group of GoodReads refugees that assembled on Google Plus to start researching alternatives, both to GoodReads and to Amazon.
I did a lot of that research myself.
All of which is to say that BookWyrm didn't exist back then. But if it had, it would have immediately been my first choice. And I believe it would have been the first choice of the whole group, too.