Sure, we could learn that they did something really impressive with the solarwinds hack that we have no idea about right now, and at that time it might be reaso

Sure, we could learn that they did something really impressive with the solarwinds hack that we have no idea about right now, and at that time it might be reasonable to compare it to stuxnet. The same could be said of any hack. However right now there is no evidence of sophistication anywhere near that scale, and thus calling it the largest and most sophisticated attack is clearly unwarranted, at least at this time.