Maybe you didn't take time to explore the wallet quite enough and therefore never had it enabled, but have you taken time to read through the responses in the thread?
Because if you did, nc50lc confirms that feature is still there with even a screenshot. Here is the link in case you would like to see the magnified version:
https://imgur.com/LlI0ie6They also said it could be for old accounts only. But I'm not sure how old 'cause I don't see it on my 2016 blockchain.com wallet, same with the new account I just created. It's also possible that there maybe other conditions to be met.