DE/Edge is also very weak. We're back to Lawrence getting triple teamed at this point.
He won't, because if they did that Parsons would kill the QB every time. Parson's literally might be the best pass rusher in the NFL. His win rate was like the highest in the NFL last year. And no it doesn't have to be by playing DE on the other side. Just bring him from anywhere. Which sort of prevents the double teams like you are mentioning for Lawrence.
And I am far from the biggest fan of Armstrong but he isn't a total scrub. He can get pressure and he can make plays. He isn't Randy Gregory but he isn't just a turd out there. Frankly Golston is going to need to step up. He played meaningful snaps last year. He had a play here or there. It's his second year and he was a third round pick. He needs to become more.
And Fowler, well he is just icing on the cake. Now we will get another pass rusher in this draft. I'm confident of that. But I wouldn't be as extreme as you say.