transistors - Why are the current directions in the hybrid-$pi$ model for BJT the same for both NPN and PNP?

Here is the hybrid-\$\pi\$ model:

with \$I_c\$ and \$I_b\$ going in, and \$I_e\$ going out. The same circuit can be used for both NPN and PNP, the only thing changing being \$V_{be}\$ for NPN and \$V_{eb}\$ for PNP.

The currents direction does not change, which is what I don't understand. We know that for a PNP in active mode, \$i_c = i_e+i_b\$.

For a NPN in active mode, \$i_e = i_b+i_c\$, which corresponds to the current flow shown on the hybrid-\$\pi\$ model.

Why is it the same for PNP?