That is correct. Stratis is already listed on the major exchanges that other projects can only dream of and is also one of the few to get on https://changelly.com/ The Stratis team has higher priority things to do such as the "secret project", developments and marketing instead of trying to get listed on another exchange.
they dont need another exchange, at least not right now. Far more important is getting more and more finished products out. That'll catapult them into the top 10, no doubt
We need Bitfinex, coinbase, and more, more large exchange, the better.
Bitfinex is quite possible if dev and community will make efforts than we will see this on that platform. I don't think Coinbase is not an easy target for any project especially this stage when it need big adoption and after this we can keep hope for this.