Not true for plywood in my experience. You will never get as tight of a glue up using only brads/pins as you would with clamps and a mechanical fastener. Screws yes but I don’t think brads have the holding power to prevent any gaps from forming during the glue up process.
A couple years ago I got a handful of F clamps for christmas.
My wife: “I thought you already have clamps”
Me: “Yes, I do. But not enough.”
Wife: “How many is enough?”
Me: “One more than I have.”
Also a little 18ga brad nailer makes those glueups way easier.
Not true for plywood in my experience. You will never get as tight of a glue up using only brads/pins as you would with clamps and a mechanical fastener. Screws yes but I don’t think brads have the holding power to prevent any gaps from forming during the glue up process.