Atlas made a lever operated turret tailstock. I think it was basically a replacement quill in the standard tailstock casting. I think that's probably what that turret is, not an MT turret.
IMO that's an expectations issue.
The Atlas was an inexpensive lathe in its day and you have to remember that. I've got an Atlas 10F from about 1946 (54" bed and Timkin bearing spindle, but no qcgb) and it consistently does good work for me, but if you're expecting a South Bend 10 heavy and buy an Atlas you'll be disappointed.
I paid $600 for my Atlas and have easily gotten that much use out of it. Would I like to upgrade it? Yes, but it has done everything that I have ever asked of it so I'm holding out for the right lathe, at the right price, at the right distance from me. The
largest job that I've done on it so far was to turn down a 34" long shaft from 2 1/4" diameter to 2" to make an overarm for my mill and it got the job done. An Atlas in good condition is a good lathe. It's just also a lathe with limitations.