You can strafe with WR's as long as its not on all pro or above I believe. Above that it was taken out to make Rocket catching less effective
Even without strafing height is arguably the most important factor for WR's this year especially if you play online. Its almost to the point that height is much too important because a player like Jared Cook Jr is one of the best Madden TEs in the game due to his height.
You don't need to strafe to trigger the spectacular catch animations and the endzone fade will do it for you. You can get the same jumpball catch from streaks if you throw it so that its a throw that is so far that the QB doesn't throw it in a way that allows the WR to keep running. The WR will stop turn around and jump for the ball. Face throws are another way to abuse height and is probably the most used online tactic this year other than outside slants. Face throws are the Bambi animation. You can easily user catch curls, comebacks, deep out routes, corner routes, the c routes, and several others in order to get jump ball animations.