RSS is already baked into mastodon for anyone wanting to use it.

There's still a need for some kind of service to push updates to other platforms. FB, Twitter, bsky, insta, these all have APIs to allow posts in, but have few resources to let posts flow out. So fuck 'em. They get to be at the tail end of the content centipede.

From a department owner's perspective, the less time they think about wireup for social media stuff, the better. Post once and let it all roll out to secondary platforms.

And, IIRC, Pixelfed is the fediverse version of insta. I poked around it, but I was never really an instagram-type person.