It is surely possible if only because the general population is not interested in infosec.
On the gripping hand,firmware writing practices being that they are; it is impossible to produce an uncrackable phone.
It's is acceptable for the hack to be difficult so long as it exists. I'm sure later models will eventually be jailbroken too. In the meantime, all of nintendo's best efforts haven't ended the piracy of switch games which is what the vast majority of people care about, not getting their favorite linux distro to run on the hardware itself.