This is correct, these radio's are not certified for use in frequencies other than those allocated to Amateur Radio. Also one needs to keep in mind, GMRS is limited to 2 watts, and FRS limited to 0.5 watts max.
See below excerpt from Low-power Licence-exempt Radiocommunication Devices — Frequently Asked Questions;
"By law, licence exemptions only apply to radio equipment that has been tested and certified to comply with specific technical standards, and operates in specially designated frequency bands. Such restrictions are necessary to ensure equitable access to limited radio frequency spectrum by all radio users, as well as to ensure the orderly development of radiocommunications in Canada."