Yes, it's originally due to the fact that most Saiyans can detect aura with smells and feelings through their own ki. If this ki were to be absorbed from someone like cell, then others will sense this and feel it as the ki is absorbed into the other person. This allows them to only sense the enemies ki instead of the one who has been absorbed.
Ok let me go and count, going with his Non-Canon stuff too and stuff he doesn't have anymore Great Ape, False SSJ, SSJ, Ascended SSJ, Ultra SSJ, Full Power SSJ, Super Saiyan/Partial Manifestation, SS2, SS3, Golden Great Ape, SS4, Super Full Power Saiyan 4, Limit Breaker 4, SSGod, Saiyan Beyond God, SSGSS/SSBlue, UI Omen/Sign, MUI/PUI, Giant Ki-Avatar UI. SSJ/SS2 Berserk (via Evil Ki), SSBlue (Universal), SSBlue (Berserk), God's Crimson Radiance 24 Transformations 25 if I also count his Potential Unlocked state from back when hr fought DK Piccolo as a Kid
@@hoshiryu Remind me what's the diffrence between the 2 ultra instinct One is in the tourtament of power , the other is while fighting free-from-mind-control Goku Black ?