Whatever difficulties you have with projectile spammers depend on which character you are playing as and the patterns your opponent may be slipping into.
Smoke can use his Shake to counter projectiles; Nightwolf can Reflect them (or heal himself if he enhances the Reflect); some characters can teleport in on him and pulverize him; some can just trade projectiles while risking damage to themselves; some can use armored moves (like Raiden's Enhanced Superman as an example); others can outzone the spammer.
Even with the dash nerf, dash-blocking actually isn't all that hard once you get used to it. But online, it's not as effective due to how the inputs get corrupted often. Offline, it's no problem. You can also duck the projectiles without blocking and they will just go right above your head.
Be careful, though; if they catch on to your tendencies they may start throwing out random tactics just to throw you off. A smarter player is even worse to contend against. Often they will expect a jump-in or teleport, so be ready to play your own mind games.
As EMPEROR_iNFUSiON once said to one of his fellow clanmates: "If someone is spamming, they're actually setting themselves up for punishment." Once you recognize the opportunity and start punishing them over and over for their mindless projectiles, they'll start to second-guess themselves and you will have control.
By the way, I see you are from Oklahoma as well. Good to meet ya here!
