There is a small known risk. I would certainly not have it power flushed under normal circumstances. Would just change fluid and filter myself. Or at a reputable garage if unwilling.

At least you can drain the torque converter as well getting the bulk of the old fluid out on these models. The power flush just intensifies the risk greatly in my opinion. Without changing it at all the filter may become too obstructive or restrictive eventually.

Make a point of the method of getting the fill quantity of new fluid right. The archives are your best guide. More than a few have been over/under filled. These particular models seem to want some attention to reading the dipstick applied. Transmission driven till up to it's operating temperature for example before reading.