Not stating an opinion either way to the platform or it’s constituents but naming the result of rebroadcasting a message to ones followers has no effect whatsoever on its effect.
A retweet, share, and apparently an echo are all semantically close enough to be called identical functionality, save for perhaps upstream metadata associated with the source.
eg on Facebook I don’t know if, once you share a post, the total share count is displayed on the post itself. However on Twitter this share count is shown.
They’re all the same sheep with isomorphically identical data just dressed up in different pairs of clothes.