I have times my band website on WordPress with ActivityPub converted. Feels a bit beta, but you can subscribe here @Reverend (if you want). Then I realized that WP also works with matrix.synapse. I like the protocol very much and think this will be much more important and powerful than ActivityPub in the long run. Communtity creation is almost not possible with AP and you can use matrix e.g. also very well as cloud, it goes all real-time things: streaming, video chat, chat etc… Both has its justification and are good. Both can be integrated into WP… how nice.