Its because Horde are known for taking anyone and they have a reputation in game as being a ‘meatshield’ for PL,
rightly or wrongly,
its a known fact that most players who have mains in other null entities have alts in horde, because anyone can get in.
This makes it a great corp if you want to just get out to null and play, but if you are thinner skinned it might not be the best place.
Horde leadership could stop this problem right now, but to do so would change the nature of the corp- it would no longer be horde
the junk spai alt trouble accounts would go, but so would all the alpha pilots and guys like yourself who just want to play without the long winded application process that joining a null entity usually involves.
Myself, I like to surround myself with people I can get on with, I might not always agree with them and sometimes argue with them, but I would not want to be in a corp where anyone can join, troll get banned, then just roll another alpha to carry on the troll- so Horde is not an option for me.
Why do you think it is your only option?
This thread is full of good advice.
And while @mkint who pointed out "the receptivity to an idea is often just as dependent on charm as it is on the merits of the idea. " is just stating a truth of all human interaction, it is a sad truth, because some of us just don’t have that charm do we?
But if you start interactions with the assumption that others AREN’T stupid, and they DO WANT to help, sometimes you will be taken for a mug, but usually you will get and receive help.
TLDR: if charm is not possible, try manners, as my gran said they cost nothing and can buy you anything you need.