That's a bit of a cynical take in my opinion.
For a community focused initiative, I'd say they deserve a bit more slack in terms of expectations of professionality, scale and sustainability. They now leave it up to the community to decide to pursue that or abandon altogether. Fair thing to do I'd say.
Also: the original forums aren't suddenly deleted: https://davehakkens.nl/community/forums/index.html He explains the process of migrating into 'One Army': https://davehakkens.nl/index.html