HMs creating dummy roles?

Are HMs at companies creating dummy roles and following a fake interview process only to hire internal candidates/friends? I’ve interviewed for many roles, over the past few months I haven’t seen anyone getting hired for that position and the roles are reposted/promoted too on LinkedIn with over 100 applicants . Are they trying to fake it that they are making an effort to hire external candidates when they actually aren’t? Also, I’ve received interview invites for not so relevant positions, are they trying to meet some dei quota as well?