there are some twists/revelations once they go for a trip abroad (so to speak) showing that nobody but who/whatever brought Hiro to this dimension can make anything remotely like it. people from other worlds get special goodies that are more like physical manifestations of their soul than simple machines, & in the WN comments there was some speculation/debate as to whether the author would extend it to ALL of the toys Hiro spawned in with (ship, laser pistol, bulky-ass mech suit he immediately replaced) or just the ship, but... well, the gun was immediately ID'd as rare but existing in-world tech & he already replaced the mech suit with something better so it'd be weird to turn around and go "oh yeah btw that's a whole-ass transforming star-killing death machine just like the ship, your stupid tryhard ninja armor is trash lol"
especially since they almost immediately made the ninja armor pointless as well in the process, since the whole arc is around how psionics work and ofc the MC has to be capable of using every Star Wars jedi/sith power effortlessly for this to count as a proper isekai series lmao