I have more doubts about Achakzai and the communist refugees PTM behind these blasts.
If we analyze the recent trends of terrorist attacks it mostly leads to Indian NDS nexus.
Afghan Taliban just met Chinese. The last thing for them is to support terrorism on CPEC and in general in Pakistan. They are not foolish that for certain we know.
Besides one needs to be critical of who the facilitators and handlers of TTP actually are. Their actions are mostly that favour India/Kabul regime and against Pakistan or infact even Afghan Taliban. (Who benefits from attacks on CPEC by TTP? ) ( General Tariq interview of TTP using Indian equipment is a reminder for people who forgot all the equipment recovered footages and links unearthed when we were in the thick of it all).
Right now the major problem for our enemies is the collaborarion that is developing between Russia China Iran Afghan Taliban Pakistan, and the likes of TTP BLF PTM (The handlers fir each of them are the same) will be used as spoilers.