I was not offended myself... I just did not want new people ( to doing their own valve adjusting ) to get caught unawares of the potential problem....
For many people , even with the 'correct' and bought wrenches, getting the three nuts to give the proper clearance is not easy. The bought lower wrench has the added help of a little ' table' under it to hold it at the angle needed.... whereas with channel lock plus the two wrenches three hands are very helpful.
My main point is to be wary of placing oneself in a position where their tools will not suffice for their needs... with no way to correct the situation short of having to reassemble the engine and wait for ordered tools to arrive . ( Many dealers do not have these IN STOCK all the time ) I had to wait a week for the dealer to get the lower one.
Anyway , a little drama increases readership of some threads...