The IRA increased taxes by 740B and increased spending by 440B. That's a net reduction.

If you transfer wealth from the rich (who mostly use money to invest in assets) and transfer it to the poor (who mostly use money to buy consumer goods), wouldn't that naturally reduce asset values while increasing prices of consumer goods?

Perhaps, but the IRA doesn't do that, unless the poor are suddenly buying electric cars and wind turbines.

Also remember the time impact. Taxes went up immediately, whereas the bulk of the IRA rebates will happen in a few years.