No, Taika Waititi is not directing Guardians Of The Galaxy Vol. 3, so stop asking
Ever since Disney fired James Gunn from Guardians Of The Galaxy Vol. 3 after some old, problematic tweets resurfaced last summer, the media mega-corporation has been scrambling to find a director to replace him, even putting the production on hold until they find someone. A number of names have been tossed around as potential replacements—like Vice director Adam McKay, who was approached by Marvel in December, or Jon Favreau, who kickstarted the MCU with the first two Iron Man movies.