Humans aren't as rational as some of the jg mains on the board would like to think
If your top lane gets hard camped by the enemy jungler and you don't want to throw them even the smallest bone, they most likely won't give a shit that you might be doing something elsewhere on the map (and their reaction will be 5x worse if you're actually getting outjungled and not having much of a presence elsewhere on the map).
Your top laner WILL likely tilt, and you'll lose the game.
You can cry about weak mental and this and that, but if you care about winning, take note of lanes, especially top, that get hard camped. People that feel helpless will generally get in a shit mood very fucking quick.
This is just basic human psychology, like it or not. If you give a damn about winning, do SOMETHING for them. If not, continue on with your self-righteous "thou shall not blame the jungler" attitude while you just end up losing the game anyways because your top or mid gigatilts and starts actually throwing the game out of spite towards you.