but I never understood how the p2 elder
there were no "elders" in P2. the only way it was called by creators in comments was "the old guy". elders are in jajuja culture
could activate and aim a laser without the bio helmet
it's just a helmet with nothing "bio" in it. "bio" comes from jajuja fans for zero reason. and predators operate their tech both through buttons or wireless thinking with or without those helmets, as it is established by the whole P2 crowd, switching invisibility on and off. if you already afford "reading brain waves", there may be no need in for an additional mechanical detail, if you find one already biological.
for example, they also don't have any audible language, and their mouths aren't built for compex pronunciation, so they just parrot sounds (parrots can repeat sounds complex enough, lacking lips and properly moving soft tongue - just like predators). so how do they interact without helmets "reading brain waves", before even beginning making tech?
did you notice those tendrils going out from the insides of their skulls, the only reason for which would be a neuron connection to the brain? the ones that some jajuja fans consider to be dredds made from hair?
That was always so stupid to me
that's because your ideas have too much jajuja crap in them, making you unable to percept and analyse facts
as i've always said, ADI predaturd faces, unable to close mouths, won't fit into helmets beaks, designed for original predators beaks, and those masks proved that right when first photos of them appeared in ADI book.
there is also no breathing equipment here - and actually no isolated compartment for breathing at all. brilliant design truly.