Sorry, misunderstood your intent.? But that's an emoji, not a "like/reaction" type, or am I missing something?
System seems to be working fine. However, I would suggest removing the negative 'scores', even for dislike (thumbs down) and angry reactions, and giving them a positive value as well.Sorry, misunderstood your intent.
A half dozen or so reactions (currently 5 "grades", -2 to +2, with 2 duplicates) seems to me to be sufficient for some fineness in grading reactions without becoming confusing. YMMV