Well no need to do that, I had a look and it's not like you're attempting to "abuse" autovotes or anything so cross-posting onto other communities - especially if you're doing it from an alt to not abuse autovotes - is probably welcomed there. We're just attempting to mitigate the usual abuse that comes with it from other users who may not be as careful as you are and to encourage a more "curation" aspect from it by letting other users share the posts of others instead.
So please don't take this negatively to discourage you to use the feature as it wasn't meant to be that way. :)