Greenspan did screw up by keeping rates too high in 1999/2000, but W did reappoint him, plus W is one of the worst economic presidents to ever hold the office.
Unfortunately successful politicians in the main do not understand economics at all. In the last century only Coolidge and Reagan actually understood it. Reagan’s college degree was in Economics. Politicians get sucked in by Keynesians whose schtick is to convince politicians that the secret to monetary stability and to raising government income without raising taxes is in manipulating money. They tell pols that nothing really works unless the experts, themselves, are turning knobs and pulling levers. This sounds wonderful to pols who do not know how money and markets work. Bush said he is a “conservative Keynesian” which means he wants outcomes that conservatives want but the Keynesian methods cannot produce such outcomes. Even if they make the “right adjustments” their reading of signals is so slow and partial that the situation has reversed before they get their “fix” instituted and they just wind up with wild swings.
Yeah. 6 years of phenomenal growth after inheriting a recession is really bad.