Actually, we can't trade on the decentralize exchange for this high cost. Send Ethereum>Deposit>maketransaction>withdraw>send it to my wallet. Maybe you could use centralized exchange for these types of transactions and use Binance coin to change from one exchange to another exchange. Now I'm ignoring the low price ERC-20 tokens to sell that can't recover the transaction.
If we can profit from the trade on the decentralized exchange, I think we don't have to think about the gas. I don't want to pay for that such high gas and I am waiting until the gas can reduce for a while so I can try to buy the coins/tokens. If you trade at the centralized exchange, the gas fee will not increase too high because I see in binance, the gas still not too high depends on decentralizing exchange. I agree that we can use other coins to replace the gas fee.