There may be a legitimate support for your concerns. In a recent February, 2019 issue of Aesthetic Surgery Journal, examining threadlifts, researchers found that not only did the results of the threadlift not last significantly more than six months (and were gone by one year), but that complications, such as infection, facial stiffiness, skin dimpling, etc. were experienced by more than one third of the subjects studied. The authors of the study concluded, therefore, ""Given the transient benefit and the complication rate of 34%, we recommend limiting this procedure..." On the other hand, nonsurgical cheek augmentation these days can be simply achieved in a matter of about ten minutes via the use injectable hyaluronic acid-based volumizing fillers, such as Voluma XC and Stylage XXL, with little to no significant downtime and typically engendering an immediate "Wow!" reaction and with results that may last up to two years. Make sure that you consult with a board certified aesthetic physician and be sure to ask to see his/her before and after photos before agreeing to proceed. Best of luck and Happy New Year.