There is a sushiswap clone out there that is operating on a parallel network of effereum. Gas fees for swaps are fractions of a fraction of a penny. Cross chain compatibility for erc20 tokens coming soon.
Tell us what this DeFi platform is. I doubt about the gas fees when it's on the ethereum (not effereum) blockchain. I would believe it if it's on Binance Smart Chain (BSC).
Did you get your two eggs out of the basket? Do the needful sirs.
Do you want us to play the guessing game? You would be a fool if you would invest in a platform you do not even know it existed.