At this level for studio photography? Yeah. Think about it this way. The food stylist needs time to do their thing, make the prop look perfect. Set dressers need to do the same for the set and any non food props. Add another round of that if there’s any people in the shot (including hair, makeup and costume adjustments, blocking and the like). Then you need to light it which takes time as well. And once lit you need to set the cameras, readjust the lighting and so forth.
No one takes one shot, even to capture a single image. So there’s delays for adjustments based between shots. You’re going to be taking multiple shots of of individual products. And shooting multiple products. Because studio space is expensive and can only be booked in 4 hour increments. So you’re doing that multiple times in a row, staging what you can in sequence or over lapping (if you can afford the crew to do so you probably only have one stylist).
Increase the complexity and time for video.
And typical photo and video studios don’t have kitchens. So no fridges, freezers, stoves or what have. How long to you really have with something like ice cream? 5, 10 minutes in open air before it melts? Are you keeping it in a cooler all day with dry ice? Shits a puddle within 30 minutes and it doesn’t stay styled the way you want it for very long at all. Do you just keep scooping new ice cream every few minutes as it melts? Stopping to wipe up spillage?
Thing about the substitutes is they don’t spoil and leave lingering fetid smells for months, make your staff hurl, spread food born illness, and attract roach infestations.
More over the substitutes are stable and have predictable behavior. Milk can curdle or separate. Syrups are thicker when they’re colder and thinner when hot. So something like molasses may not pour at all if it’s too cold. Or pour so thin it doesn’t look like believable molasses. The subs act in predictable ways across temp and time, and they’re stable.
Some times the subs are even food. Like the two big subs for ice cream are Crisco and mashed potatoes. Neither looks very much like ice cream in person. So realistically they don’t look better than the food actually does. But under lighting with careful dressing and camera work they look exactly like ice cream.
I think it’s legally fine if you “accurately represent” the product in question. And there’s not a ton of enforcement. The key question always seems to be whether the product was misrepresented. Not whether the actual product was used.
I keep hammering on the ice cream because it an extreme example where it’s very difficult to use the real product. But almost no ice cream ad ever has featured the actual ice cream.