Just another personal opinion, observation and thought provoking question ... how are the micro fiber towels being washed? What quality micro fiber towels are they (ounce/lushness/density)? Then take the same questions and substitute 'cotton' for 'micro fiber'.
Here's the opinion part: I have seen brushed cotton towels from Persia that rival Chinchilla Fur for softness and suppleness, but for price I can't justify buying them for my personal bath towel let alone my car. Same applies to micro fiber towels. I have several, some are outstanding, literally luxurious, which are ONLY used for paintwork, and some that are good, but nothing like the plush ones and I also picked up a pack of "Micro Fiber" towels at a wholesale club. They work great detailing the inside of the car, dash, leather conditioning and on the windows, sliding shower doors and granite counter tops in the house. Although they 'say' micro fiber, they're far from being satiny and would certainly mar paintwork.
One day I picked up one of the micro fiber towels used in the house, and it felt horrible, almost tacky on my skin. Looking at it I could see lint imbedded into the fibers, yet it was just pulled from the clean rag bin in the pantry. Seems my better half had been washing the house-hold pack of micro fiber towels with the rest of the 'towels'. As she looked at me staring into the towel, she told me they were horrible as they’re now leaving lint all over the countertops … something I told her wouldn’t happen with them. I've always known to wash micro fiber by themselves, yet somehow never told her this little factoid. A simple comparison of my detailing micro fiber towels (washed separately) to her house-hold micro fiber towels (washed with the rest of the cotton towels) was all it took to convince her of doing them separately. (Note: we ended up throwing out the bad towels, they never returned to normal and always left lint behind.)
Alas this long story leaves us with the question: What grade towels, both cotton & micro fiber, and how they were cared for. I think these questions will reveal quite a lot about how well the paintwork finish will/did turn out after only a few wipe downs.
This was an expensive lesson for me, and I hope it helps enlighten you to the variables of quality, regardless of the name it’s identified by.
Hope this helps.