I am not an IDF procurement officer.
Israelis have their own logic and needs. Good luck explaining to them why they’re wrong.
The Warthog is not a "first day of battle" weapon. The US brings them in only after they have suppressed enemy air defenses using other weapons. The IDF is too small to devote resources to an aircraft that it can only use after days of SEAD operations by fighter bombers. Some of us can recall, for example, the heavy toll that was taken on Israeli A-4 Skyhawks during the Yom Kippur War. Low-and-slow is a sure way to get yourself shot down during the opening days of battle in the missile saturated Middle East.
The kind of roles that the Warthog performs for the US are carried out in Israel by a combination of high speed fighter-bombers (which can carry the heavy bombloads needed for larger targets), or by helicopters (which can loiter and pick off individual armor or infantry targets).