Scam? How so? It is just interoperability. Listing on uniswap as well is to reach people outside on Hive, who use eth. It is being looked at for Hive itself: @taskmaster4450/the-speed-of-hive-hive-on-uniswap

Uniswap is more like another exchange, that allows you to swap among tokens directly. It has wrapped btc and others are considering adding there. It has volumes of 250 million usd and it is quite new. Projects also go through that approach for easier listing on big exchanges as exchanges more easily list ecr20 tokens. I don't know how easy it is for instance to list a Hive-engine token for instance on say bittrex, so one may go the path of an ecr20 copy of the token instead, if their target is say a listing on there. Altogether, these things will eventually happen where chains can interoperate. I have started writing what i am trying to do but it is still in draft form but this a video i did earlier. My internet and pc is slow though, i just hope the video turned out manageable: