Breast thread lifting. Is this technique realistic?

As I read the claims of the procedure you describe, it appears the surgeon is making stab incisions around the areola and using a permanent suture to constrict a large areola to reduce diameter.  If I am interpreting that description correctly, then it would be a fairly limited change.  The areola can only be constricted so much before it becomes distorted.  No photos are posted, so that may be all the change you need.  But if you need a traditional lift, then threads would have  a limited effect and be short lasting as others have said.   

Unfortunately, many of the cases I have observed do not have long lasting results. Distortion of the breast shape, uneven right and left breasts, recurrent ptosis, threads slipping or breaking, etc can occur. Also, some of the puncture sites are high up on the chest and visible if they scar thickly.Traditional breast lifts with or without implants offer more consistent, lasting results.Further consultation with a plastic surgeon is recommended to better discuss your options and expectations.

First they started using treads on neck and face. It proved to be very short duration and most patients were unsatisfied after few months. Doing breast lift with treads seems to be even more questionable. Seeing long term result or, if possible, talking to a patient(s) who had experience with this technique, would help you to make informed decision. Good luck.