I hate to state the obvious here, but Jesus is not discussing biological fathers: the context is a religious one. Louw and Nida (Lexical Semantics of the Greek NT. Atlanta: Scholar's Press, 1992) provide 24 examples of πατὴρ in the GNT and show that one must carefully differentiate between distinct semantic domains of πατὴρ, just as one would carefully parse between unique senses of "earth" in Scripture.
"In context 5 ('do not call anyone on earth father')
the use of PATHR is quite different from what it is in
previous contexts, since this is certainly not an
injunction against speaking about one's own father nor
is it a taboo about speaking of God as 'Father.' In
Matthew 23:9 the focus is on authority within the
believing community, and so a term appropriate to God
is not to be used in speaking about [human] persons"
This explanation is obvious in the context of Mt 23:9; nevertheless, some continue to insist that this Matthean verse does not rule out calling religious leaders "father."