I occasionally buy chickens from the farm shop (who get them from a supplier), and they used to come with the giblets in a little bag inside. My understanding is that this is perfectly legal, though a bit unusual these days, and I'm fine with it.
The last couple of times I've found they have the giblets, but loose inside. I'm not keen on this, because you have to root around to get them out, and because I find the chicken ends up tasting a bit 'gamey' if the giblets have been left in like this. I cooked a chicken today that I bought on Friday, and the use by date was the 10th. I think it would have tasted a bit rank by then TBH!
It's not super obvious from the packaging that the chickens have giblets inside, so you could easily not realise (if I'd realised I'd have taken them out on Friday as soon as I bought the chicken, but I forgot).
Am I being a bit fussy, or WIBU to mention to the farm shop and see if they can get their supplier to go back to putting the giblets in a bag instead of loose?