Setting this expectation early seems honest and the best thing to do. The worst is when companies sell people on WLB but then flip it to 996 -- you end up with all the wrong people and no one wins. Best to be transparent from the onset.
I always encourage candidates to go visit the company several times if possible, including a visit at 5:30pm or 6:30pm to see the state of the office and attendance. There is no right or wrong answer --