What's the benefit of using erc-20 converter?

As per title, what are the benefits? I can’t think of any sole purposes other than skipping the middlemen like exchanges for swapping coins, is that the only true purpose of erc-20 converter? Is it possible to use the converter to integrate into smart contract and do stuffs such as lending Ada in Cardano and borrow in Ethereum dapps? Also there seem to be a lack of documentation about this important feature. Thanks in advance if anyone would share more about it.