The options are still there. If you think you’re skillful enough as to rub off Tampo printing or painting over it then putting on and aligning some stickers shouldn’t be such a big problem
Of course, Tampo printing looks much better than decals or stickers and canon markings are canon markings, but I guess they thought some people would prefer this valk markingless and that putting some stickers on is less potentially harmfull to the toy than rubbing and painting over.
Personally, I don’t care that much. I like this toy as is and don’t think I’ll be adding any markings on it.