I take this approach with everything I post, though I only syndicate to Mastodon. I have an RSS and JSON feed for each of the content types (they all have different schema) on my site: posts, links, books, movies, concerts, status updates and a combined feed. I also maintain an ICS calendar subscription of upcoming album releases.

These items, in turn, can be optionally syndicated to Mastodon when published. For status updates, I have a field that supports Mastodon-specific text (for mentions and so forth).

I also expose an oembed endpoint that returns the appropriate data for each content type for platforms that support it.

Everything I read is from RSS feeds I follow via freshRSS. Links are saved to linkding and are transformed into TTS "podcasts" that are sent to audiobookshelf.