Who are Qadianis?

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(Supplement to Anjam-e-Atham, P. 25; Roohany Khazaen, Vol. 11, P.
309)
His eulogy about Maulvi Saadullah Ludhianwi was:
"I look a sinful man among debauched who is more
scoundrel and an execrated being like Satan...
He who is called Saadullah by the ignorant is slanderer,
wicked and a falsifier...
You injured me, bastard. I won't be truthful if you won't
have a disgraceful death." (Haqiqat-ul Wahi, P. 14-15;
Roohany Khazaen, Vol. 22, P. 734-735)
"If Abdullah Athum is saved from death (as per Mirza's prophecy) and if
all the world say the Christian was correct, then the bastard will not follow
the right path."
(Roohany Khazaen, Vol. 9, P. 32)
"Abdul Haq is not content with our victories. He is itching to become a
bastard."
(Anwar-ul-Islam, P. 30)
"There is nothing more foul than a pig in the world. But the ulema who
oppose me are more foul than pigs."
(Anjam-i-Atham, P. 21)
"You have inflicted pain on me with your foulness. You are not truthful.
I pray that you die in shame, you son of a harlot."
(Anjam-i-Atham, P. 288)
"This bastard of a doctor does not thread the straight path."
(Anwar-ul-Islam, P. 30)
He called Shaikhul Islam Saanaullah of Amristar:
"O, the son of wind, o traitor..."
(Ijaz-i-Ahmadi, P. 43/77)
The puzzling thing is that he himself wrote:
"I have never abused anyone."
(Moahiburahman, P. 18)
"He is worst who is abusive, his heart is as filthy as Latrine."
(Sar-e-Sumain, P. 74)
"Abuses and rebukes are not the acts of a believer and a believer can
not be a curser."
(Azalat-ul-Auham, P. 66)
Is this how a Prophet or even a rightly guided individual would speak?