this is not fully true the longterm trials are still ongoing until 2023. i rather wait until those have completed. So no they have not been fully approved yet they are still in testing phase. if you call to pfizer or moderna hotlines they will tell you the same.
i get tired of this isn't fully britney etc. even gaga has backup singers in her songs so has ariana and more. get over that aspect it's nothing new in the industry. myah hasn't been involved since the glory project took off 98% is britney in the whole glory era.