So in addition to the red flags I mentioned for those who have preordered, here's two more.
The game is practically 2 days from being released, and...
There's been NO gameplay videos released.
No reviews posted from major gaming outlets, even those that are friendly with EA.
Now there's actually not-horrible excuses for this, but they're still bad.
1. EA's been working on the Day 1 update so that the game will work 'perfect' across PC, PS4/Pro, XB1/X, PS5, and XBX/S. That's a shitload of systems to make 3 games work perfectly across the board, especially the PS5 & XBX's framerate and resolution modes.
2. The games are a total of over a 100 hours if you take your time trying or try 'complete' them, and that'd be a large task for any reviewer... so at least they're not in the situation that MGS5's reviewers had, in which they had to rush through the game in like 15 hours.
Regardless if you think those two excuses are reasonable, the smart move would be to wait for the game to be out a few weeks for reliable reviews to be released.