Hi @AdamGreenberg . I’m not an expert on RSS but as long as you are not worried about harvesting download stats then I don’t think multiple feeds matter much but you should consider each version a different show from a tech point of view. That’s a lot of work!
Yes, you should because some places like Spotify don’t use RSS and so don’t crawl Apple. I think Amazon requires registration for inclusion to Audible. Anyway, check out this guide for the essentials so you can decide.
You usually edit your podcast description from whatever service is hosting your audio files and generate the RSS. So I think you need to figure out how you do this from your Wordpress site. That being said Apple podcasts have their own weird way of displaying descriptions - so you might find your description appears differently on Apple than anywhere else.
My podcast host, Libsyn, has two fields for podcast description - one for Apple and another for everyone else! That being said it’s ultimately contained in the RSS feed so maybe figuring out the way to edit that might help.