You can still trade on Gemini via their
Active TraderTM platform, that is similar to CoinbasePro, and will be
charged a 1% fee if your 30 day rolling volume is less than $25k.
Gemini appears to be moving towards the model that Coinbase (not coinbase pro) used, that is to attract retail customers who are willing to pay a significant markup to buy or cashout. I suspect their trading volume was insufficient to generate enough revenue, even though their fees are among the highest in the industry, if not the highest. They appear to have given up on trying to compete with "real" exchanges and appear to be competing with LBC traders (and CB).
You can also create an API to get even
lower fees.