Cross-table interactions and play to win

Hi

in a recent game (4 players), Player A torporized Players B 10-cap vampire at the start of the game, then cross-table player played a Kine Resources Contested on his turn and assigned 3 on player A. Player A argues it is contrary to the spirit of play to win, as it does not maximizes Player C either victoriy points or towards Game Win. Player A is at 12 pool.

We can always argue about it being and optimal or a fair action of play, I get it but: Is it a legal play?

Many thanks in advance

Kine Resources Contested

Allocate 4 points among two or more Methuselahs. Successful referendum means each Methuselah burns 1 pool for each point allocated.

If I were Player C and couldn't really handle the type of deck that Player A was fielding, but could oust it cross-table, I would. That would offer me the best long-term chance to win. Giving away a VP to remove a threat is totally play-to-win.

Ideally, I'd remove Player A and my prey at the same time, but sometimes you have to give away a VP to give yourself a chance for a longer game.

Might be a smart move by C to prevent A growing too powerful and rolling over the entire table.

We have zero information how D was doing, how much pool and other minions B had, exactly what kind of decks players were playing etc etc.