No, I don't think it's an insult to previous generations.
It is a fact that a Tornado can drop bombs more accurately now than a Vulcan (or Canberra, or Lancaster, or Whitley etc) could in the past. A GR4 is capable of greater accuracy now than it was even 5 years ago.
But to claim that one Tonka with 4 Brimstone weapons can destroy 12 tanks is ridiculous, and the RAF potentially sets itself up for a fall:
"So, Gp Capt, I thought these new weapons of yours couldn't miss? So why did one tank get through and wreak havoc on our infantry?"