Not IMO, there are many applications where a Pic is used for Triac control with a 120hz ripple input directly to the Pic for zero cross detection, in fact I am working on such an application right now, based on both Picmicro app notes and other designs out there on the web.
Also that shows 5v supply to the IC, whereas the 90805 shows direct AC through a diode and resistor as it has an internal 15v zener, minimum operating voltage, 14vdc according to the spec sheet and shuts down if the IC does not see >13v internally.
.The pin out of the circuit in the OP certainly jives with a Pic.
M.