The reasons these socialist cats claim cuts hurt growth is because they're talking about govt growth or the need to command an economy which to them, costs money to pay their bureaucrats. Kinda like GDP which includes govt spending where the left claims Obama's GDP has improved. They just never really make it clear.
“Experience should teach us to be most on our guard to protect liberty when the Government’s purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.” — James Madison