Yes, but his argument "*probably* invalidates warranty" is in most cases just not true.
So he is basing his preference on wrong information, most likely. Hence a push back suggesting a *better* route, with *better performance* and *lower cost* because it would be a shame to miss out on that based on wrong information about warranties.
So he is basing his preference on wrong information, most likely. Hence a push back suggesting a *better* route, with *better performance* and *lower cost* because it would be a shame to miss out on that based on wrong information about warranties.