Any time you lower an IRS car, it shortens the life of the CVs. Some cars are worse than others. Widebody Hellcats are likely one of the worst as they're heavy and very high torque, combined with the long length of the axle half shaft, it imparts a lot of pressure on the CV and axle boot. In my experience, conservatively lowering an S550 Mustang reduced the life by about 50%. I've seen new GT500s get failed CV boots and start leaking in only a couple thousand miles.
I've commented on this topic before, and I personally would think twice about lowering a widebody Hellcat or Redeye. I don't know what the anticipated lifespan is on the CV boots on a lowered Hellcat widebody. I just know that it's short and I know people who have been through 3 sets in 20k miles.
If someone is made of money and doesn't mind having to routinely check the boots for leakage and replace them, then go nuts. But if a person doesn't want to do an axle job on a regular basis, I'd not lower it.
Me, I wouldn't ever lower a powerful RW drive car because it makes them slower. I could go into the physics as to why, but the short version is that most people use lowering springs and those tend to leave the shock in a compressed state which hampers weight transfer and adds additional rebound (wheel hop). So, you're left with a car that can't fully transfer its weight over the drive axles and the light rear end Hellcats are known for just gets that much worse. For me, function is more important than looks... so I wouldn't do it for that reason alone.