I think there is some confusion between Walt hunting - wearing actual medals to which you are not entitled (left if awarded to you, right if widow/other NOK of person they were awarded to) may be an offence, especially if you seek advantage by doing so - and use of images for embellishment.
i really can't see that this dress or that top would cause offence to veterans (well, not because of the medals). But if they did, it is for thise veterans to to speak first IYSWIM and then for people to decide if they support them or not.
I think it's a little premature and presumptive to make a decision on their behalf. But it's also fine just to decide you think it's tacky (or whatever) and just choose something else without linking it to a group or cause.