if it was ‘on market‘ sell down definitely yes(and I’d call him...

if it was ‘on market‘ sell down definitely yes(and I’d call him a cu*t) but off market? What’s so negative about it, it’s his share and he can actually do whatever the f he wants, he can transfer it to his kids, wife etc and it’s considered off market trade.
I’d do the same if I had (grand)children to distribute future earning and reduce the tax bill by using capital loss or controlling the bracket.
Even Tim goyder bought and sold and bought again on Ltr, Charlies etc when he needed to.
not a big deal imo and the market clearly don’t think it is.
perhaps you are being a bit too emotional.