Having the chance to have a no-pressure look at the current-gen samsung phones and play with the GearVR in the F lounge last week allowed me to 'tick-off' something I've meant to do for a while, and in a much more pleasant manner than hanging around a high street phone shop.
Similarly the headphones promotion from some time ago allowed one to look at a product which many in the lounge have an interest in acquiring if they don't already have at least one pair - a set of high-end noise cancelling headphones.
In both cases the stands were not 'selling' per se but providing information in that one could not purchase in the lounge. Also unless I am mistaken the area used for such stands is beside the gold bar and hence in a brightly-lit section of the lounge, making the comments about brightness a little difficult to understand.
These stands don't bother me in the least, and if they partially fund having a slightly better class of Red in the lounge then more power to them!