The payout on getting 10 PCO pts per liter at Esso is a bit better than getting Esso Extra pts to redeem for gas gift cards.
For current Esso mid and prem grade gas customers:
Esso Extra pts are almost double the return compared to the PCO pts. Its 2-3X esso extra points per $1 vs 10 PCO pts per litre. One liter of gas >$1.30 for mid and prem grade these days
If your primary use of the Esso points are for car wash redemption, its still better off to collect Esso pts than PCO pts regardless which fuel grade you purchase.
At the end of the day, it gives consumers more choices how they want to be rewarded filling up at Esso, but it is not a definite gain for all.