After the election, the operation seemed certain. But I think this operation news may be related to a kind of emergency. The probability of a point operation is also low, more than 50 rats have been culled in Iraq and Syria in last 1-2 month, and almost all of them were UAV-based operations.
The so-called leader of the Daesh terrorist organisation was also culled near this town. This situation creates uncertainty as to which group the operation is directed against, as there has been no announcement on the matter yet. On the other hand, another US-backed terrorist organisation, the PKK, has also made statements about Afrin for after 15 May. There are many proxy terrorist organisations waiting for Turkiye to be paralysed inside.
edit:
"Probably a Daesh cell operation or a change of guard"