Forza Horizon 6 will be remembered as a cenotaph for legacy carmakers and it annoys me that no one in the game industry commentariat has drawn that conclusion.
All the cars go “vroom” and have gears and are made by companies in some amount of turmoil if not actively undergoing mergers to survive. It's set in a country known for legacy carmakers and car culture that's looking increasingly anachronistic.
If the game had more defunct manufacturers then the shape of the game changes, but focusing on these cars makes the whole thing about Steam Trains.
EDIT: Relevant Angela Collier video (with timecode)
The modern equivalent might be me or someone my age forcing my children to learn to pump gas as if gasoline cars would exist in the future, because they just wouldn't. It doesn't make sense to buy a gasoline car