The funny part of these long rough courses IMO.... it heavily favors the long hitters. You can hit a gap wedge out of this rough, but not a 7 iron.
This is generally true, but there's a little more to it than that.
The courses that favor bombers in general are those where either (a) hitting fairways off the tee isn't a matter of skill (either because they're extremely wide and everyone can hit them, or they're extremely narrow / firm and nobody can)
or (b) there aren't significant penalties for missed fairways. Courses where both (a) and (b) are true are the real bombers' paradises - Quail Hollow, Kapalua, Valhalla and so on.
Muirfield Village has the longest non-US Open rough on Tour but look through those leaderboards and outside of Scottie, it's all guys like Straka, Henley, Morikawa, Si Woo - some of the most accurate drivers on Earth. Why? Because Nicklaus does a great job penalizing guys for not hitting their spots. Miss 5 yards left and you're in the first cut. Miss 25 yards left and your ball may be wet, or in a 4' deep bunker, or under a 100-year-old oak tree and you're on the express train to Bogeyville.
My concern with Oakmont is the same I had with Winged Foot when Bryson broke it in 2020 ... on these older, tighter Northeast layouts it's impossible to squeeze in 150,000 fans a day without trampling down the rough in between holes. So not only is it not
more penalizing to miss the fairway by 30 yards than by 5, in many cases it's
less so; instead of hacking out of a 5" deep ryegrass forest, your ball is perched atop a ryegrass carpet. If that comes to pass, then your sentence is 100% accurate and the bombers are going to absolutely roll the field this week. I really hope that's not the case - what Bryson did was less pure golf and more "hacking the course setup" IMO - but we'll have to see.