More info on jeherve_post_embed_post_loop

Here is some inline documentation for the filter:
https://github.com/jeherve/rest-api-post-embeds/blob/master/rest-api-post-embeds.php#L676-L685

You’ll notice that I use the filter quite a bit in the plugin, so you can easily remove some of the content I added to the loop content by default:
https://github.com/jeherve/rest-api-post-embeds/blob/master/rest-api-post-embeds.php#L38-L46
To do that, you could have your own function hooked into jeherve_post_embed_post_loop, but at a later priority than the other functions ran by the plugin. 100 would do the trick for example.

I hope this helps.