No one steals your design especially as there would be no reason if it has been rejected.
Envato maintaining standards across their items (as best as can be done given the scale and size of the marketplace) is one of the key things that sets them apart and makes them the biggest marketplace around, and benefits buyers as much as authors and Envato themselves.
Very few marketplaces who do not directly own/create the files for sale have no review standards and certainly not the premium quality ones.
95% of the time when items are rejected there is a good reason, and the reviewer is right. 0% of the time is it so that they can steal or try to resubmit the item.
With respect this is simply not premium in any sense. It’s also still odd to have the cropped URL and esp. when some versions have watermarks and others do not.