Sorry, "yes and no" is simply wrong.
A longer stroke (with no other changes) always increases piston speed around TDC and decreases it around BDC.
There is no opinion on this, it's plane geometry, and it was settled 2,500 years ago by Euclid and Pythagoras.

So, when is the piston speed the same at TDC and BDC?
When the stroke is zero, or the rod length is infinite.

A 4.50" stroke with 7.10" rods (n=1.578) will have a velocity curve similar to a 4.25" stroke with stock 440 rods: faster than a stock 440 @ TDC, slower @ BDC.
Unless the heads are very good, this is the opposite of what you want to keep the VE as high as possible. Where practical, the rod ratio should go up when displacement is increased, regardless of how this is achieved.

For the stock 440 rod ratio with 4.50" stroke, the rod must be 8.11" long - which is why it's not done.