The precise definition and usefulness of the term continue to be debated,[8][9][10] and the scholars who use it today admittedly do so as a convenient basis for comparison rather than for exactness

Thank you for agreeing with me, and providing sources to back up my point.

To repeat my point,

Stating that there exists a generic UK accent is as useless as suggesting there exists a generic US accent. The wikipedia article suggests that linguists by and large agree with me. So again, thanks.

please don't hug them to death, but https://www.dialectsarchive.com/ is a very valuable resource for actors and linguists. if you want to contribute to the archive, i haven't looked in a while but they were accepting submissions