I agree DETHCHEEZ, that it is a very nice Nepenthes, and shouldn't be scorned just because its name is bogus. Unfortunately many CP continue to be given bogus names, when valid names can just as easily be created.
I believe that, since its parentage is not known for certain, perhaps it wouldn't qualify for grex registry. However, it would certainly qualify for cultivar registration. Single quotes are only used to indicate that a plant is a validly registered cultivar. However, this plant is one of a group of similar, though not identical, hybrid siblings. So only a particular, unique individual would hypothetically qualify for cultivar status. Grex names are not enclosed in punctuation of any kind, just capitalized similar to cultivar names. Grex registry is reserved for all plants originating from a hybrid crossing. The same grex name is applied to all progeny of the same parents. It is similar to a pedigree for animals. See this link for more details.
Here is an example of an actual grex name: Nepenthes Exotic Dragon
Here is an example of an actual registered cultivar name: Nepenthes 'Marie'
Hypothetically a plant can be a registered grex, such as Nepenthes Exotic Dragon, and a registered cultivar, such as the following hypothetical name Nepenthes Exotic Dragon 'Cutting Edge'. A grex name is simply a substitution for a hybrid formula, and cultivar names are detailed descriptions of a particular feature or group of reproducible features. Cultivar names are not locked to any particular parentage or clone, just to the genus. Grex names are basically shorthand for a particular lineage.
For example Nepenthes [(lowii x sanguinea) x (hamata x aristolochioides)] x edwardsiana], could be registered as a grex. For instance Nepenthes Happy Days. Then someone could potentially select an individual plant or group of plants from this hybrid that exhibit a particular trait or group of traits. Then they could reliably propagate plants with those traits, distribute them and register them as a cultivar with the ICRA as Nepenthes Happy Days 'Royal Delight'. Now you have a plant that is a registered cultivar and derived from a registered grex. But cultivar registration may contain the grex or hybrid information, or not. Cultivar registration is really only concerned with the genus and the cultivar description and standard, not the parentage. So it would be just as accurate to call this new cultivar, N. 'Royal Delight', leaving out the grex name or the hybrid formula if it weren't a registered grex, since that information is not essential for cultivar registration.
Grex names are basically a pedigree (keep track of lineage), and cultivar names are descriptions of reproducible plant characteristics within a genus (regardless of lineage). They are just tools we humans have developed to help us keep track of and have intelligent conversations about the plants we grow. If we were discussing N. alata, its nice if we each have an actual N. alata plant and not that one of us has N. edwardsiana, mislabeled as N. alata.