Does the ability to speak or reason lead to any of the vices that Old Major attributes to humans in Animal Farm?

Old Major's stirring speech in Ch. I reveals the vices of
human beings. They are:

1. Man is the only
creature that consumes without producing: Man according to Old Major is
lazy and exploitative and lives off
others.

2. The tyranny of human beings:
Man is cruel and heartless. After exploiting to the maximum the animals
he gets rid of them once they have  become
useless.

3. Man serves the interests of
no creature except himself: Man is selfish and he is not concerned about
the well being of the animals whom he exploits.

Nowhere
does Major say that these vices are a result of man's ability to speak or reason. But he
certainly implies that man has the ability to reason and argue to safeguard his own
selfish interests when he remarks,

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No argument must
lead you astray. Never listen when they tell you that Man
and the animals have a common interest, that the prosperity of the one is the prosperity
of the others. It is all
lies.

So,
although Old Major does not state explicitly that man's ability to speak and reason is
the reason why man is selfish, exploitative, greedy and tyrannical he certainly hints at
and warns his comrades  against man's ability to smooth talk the animals into believing
and accepting as truth whatever man  says.