Why does the Heart aspect get so often reduced to just shipping? I know 3/4 canon heart players were into that but I feel it's very reductive? Like I thought it's about knowing yourself and others and emotions and who we really are and stuff. Alternate question: Which classes of heart would be least into shipping?

Blood has as much right to be the Shipping Aspect as Heart is tbh, but yeah, knowing the Soul and what makes people themselves is also a big part of why Heart deals with shipping- Emotions and how they compliment each other and such. Least into shipping though? Likely Breath, simply because of the Detachment part of it. Void maybe, too.