so I guess the reviewer was wrong?

Not necessarily. Content creators don’t always know exactly what the context will be when their video goes live. Particularly in pre-launch reviews like this, they’re normally just given an embargo date and don’t necessarily know the date preorders will be available/sales go live. They might just assume the two dates will be the same.

They also want their content to have legs. There’s generally waves of viewership for these kind of review videos. You’ll get people that watch it right after it’s announced, then another wave once preorders are available, and probably another when it actually starts shipping. You intentionally don’t want to be too specific about dates and other non-evergreen information, just in case things change, dates slide, etc.