What’s the (modern) meaning of the word imbecilic?

Merriam-webster dictionary defines imbecilic as something very stupid or foolish. We should note that the terms imbecile, idiot, and moron were formerly used as technical descriptors in medical and legal contexts. These words are no longer in use in neither and are now considered offensive._x000D_

Did former British PM Tony Blair refer to US President Joe Biden as imbecilic?

_x000D_In the context of the Taliban takeover of Afghanistan as soon as US forces were preparing to leave, Tony Blair accused US President Joe Biden of being “in obedience to an imbecilic political slogan about ending ‘the forever wars.’”