You’re right. I stand corrected. From page 3:
Note: You cannot receive a vanity call sign from a call sign group for which your operator class is not eligible. For example, if you are operator class T (technician), you can only receive call signs from groups C & D.
https://www.fcc.gov/wireless/bureau-divisions/mobility-division/amateur-radio-service/amateur-call-sign-systems#:~:text=There are up to three,)______" will be dismissed.