It seems unlikely that Dorsett will see 7 tgts every game, even before Edelman comes back. It's not as if JAX, DET and MIA are going to ignore what Dorsett put on tape this afternoon. However, if those teams shift coverage assets around to better account for Dorsett, Hogan, and/or White, will see different coverage and possibly more receptions, if not more tgts.
OTOH, Dorsett ran a couple short-to-intermediate crossers/slants today, and a few intermediate out-routes. McD and Brady are keenly aware of what Dorsett is now showing on tape. Dorsett is now set up to be able to run a double-move, out-and-up route and use his 4.33 speed in some future game.
After Edelman returns, he's likely to take some of the routes that Dorsett ran today. However, it seems likely to me that a lot of routes will be re-distributed, and that Dorsett may simply pick up a different assortment of routes, rather than simply fewer.