Where have I shown anger? You seem to be telling me not to question anything and just follow. Do you not see a problem in that? In no way am I comparing myself or this situation to that of Guru Nanaks, but had he not started question and just followed, would we really be having this discussion today? And as for why, usually if people claims that are quite extrordinary, people want to see it and have it proven, to say "I cant do it but I wont show you!" is childish in my opinion. Back up your claims. You say the Guru never used Amrit as a magic potion, so do you believe it doesn't have the ability to revive the dead? FYI, I do not believe science knows it all or can explain it all.
Also, you say Kala Afghana supporters want a Gurmukh to show a higher ability, but they will do no such thing. Yet, I often stubmle upon stories of "Mahapurkhs" performing practically miracles and leaving their followers in awe. So this leaves me a bit confused.