I’m assuming this is poor advice? Or is there a nugget of truth in it?
There are many ways to solve a beekeeping dilemma and you may be given seven solutions to the current situation, but don't be rail-roaded into buying someone else's experience.
Advice is usually given with good intent and it's fair to say: what's the worst that can happen if you over-feed? Not much, unless it coincides with a strong nectar flow that bungs up the whole lot and the queen has nowhere to lay (which
is bad news).
The idea of feeding sufficient to draw out a brood and super of comb has merit in that it would accelerate nest development and give space to store main flow nectar, provided of course that bees haven't by then stored syrup in the super. That balance needs delicate judgement, aka experience.
By feeding only enough to kick-start the colony when little else is coming in you will see how hard a swarm works naturally to gather for winter.
Bees are hardy and proactive and will resolve most needs. For example, a few weeks ago I thought I'd made up a 3-frame nuc with a virgin; opened it last week to find I'd forgotten to add the divider in the nuc box and they were sitting in a 6-frame box
and without the prescribed bees on a frame of sealed brood and a frame of stores (I'd forgotten those, as well).
Instead they had a frame of empty drawn comb, two frames of foundation and a gap in the box. Nevertheless the queen was mated and laying on both frames of partially-drawn foundation, achieved without feed during a trickle of a flow; they're doing fine.
The decision to feed a little or a lot and to fiddle or not must be yours because the experience gained - good or bad - will also be yours, and that's a better way to learn.