What is the controversy around Harshit replacing Dube as concussion sub in 4th T20I?

Team India fast bowler Harshit Rana replaced all-rounder Shivam Dube as concussion substitute in the fourth T20I against England in Pune. The substitution sparked controversy as only "like-for-like" changes are allowed for concussion substitutions. Several experts argued that the change was not "like-for-like" as Harshit qualified as fast bowler and had scored only two runs in his T20 career.