I have had more than one Moda red bleed.
I've also had RJR fabrics bleed. (Years ago)
I've also had a red that I purchased at a LQS this winter have excess dye.
I am in the group that feels - strongly - that it is just easier to soak, wash, and dry everything washable before cutting it for peace of mind, if nothing else.
I "assume" that whoever will be the final owner of the item will probably just toss the item in the wash and not be aware of the "proper protocol" for washing quilted items and I want to make this as foolproof as possible.
I do, however, fear bleach, burns, and tears.
I used to "just wash" my fabrics - until I tried using a starch/sizing on a blue and a red RJR (again, this was several years ago) and the red and blue fabrics bled on to the gray. I was surprised and not happy.