OK, so a couple of others have chimed in here, but let's take it point by point:
1- No frame lock, so when you shoot the crane can flex and the gun will shave lead. Ooookay. No one likes a frame lock? Then why is it a HUGE selling point? Someone must want them!
2- Only 1 grip style, fits everyone as poorly as possible. Shoot a 44 Bulldog or a Tracker in 357 and you'll get rapped on the knuckle of your middle finger. Hard. So, no thanks, don't like getting smacked on the knuckle.
3- And this makes a difference how? Oooh! I can buy a CA with aluminum grip frame and shed 1 oz! Woohoo!
4- The best target barrels in the world come with 6-groove rifling, so how is 8 better? It's because they use shallower rifling that is cheaper to make and doesn't deform the barrel as much during rifling, that's about the only advantage.
5- So, hold on. First you say CA is better because it doesn't lock the crane, and now all of a sudden a crane lock is an advantage? No. CA started putting crane locks on because the earlier 357s would shoot loose really quickly. So, a frame lock is a good thing.
6- Weeeell, sorta. Simple design? Sure. Reliable? No. Easy to work on? No. Smooth triggers? No. Cheap to make? Yes. And forged frames are stronger than cast and pinned metal, by the way.
7- And so we get down to the crux of the matter. Low cost/price. Price point sells a lot of guns. Not because they're better, because they're cheaper.
8- CA has been making guns for a long time, since way back when the 38 Special waas considered a big gun. They made a lot of 32s as well. variety is the spice of life, until you can't find ammo for your oddball gun, then it's a pain in the rear pocket where your wallet lives. And BTW, S&W and Ruger make a 44 Special, along with Taurus, but most of the industry no longer makes one. Not sure who makes a 32 Magnum because, quite frankly, no one cares about 32 Magnum except a small niche of shooters.
9- Oh, yeah! All those shooting pros could have had a better trigger if they had just chosen a Charter Arms!
Sorry for the guffaw. Charter Arms triggers are universally bad. Lots of guns come from the factory with bad triggers, but most of them can be fixed. Not Charter Arms, those are just bad.
10- Be sure to mention that to Jerry Miculek. Guess he never knew Charter was better.
11- Well, you got me on that one. Sure wish some other manufacturers had guarantees. Like Ruger, who will work on a Ruger no matter when it was made. But yeah, CA will guarantee their stuff for life. Just like Taurus. It's a selling point, and they understand very well that most people will never shoot their guns enough to need the warranty.
OK, so as to not totally tick you off, I will say CA is an OK gun, but just OK. In my 50 years as a shooter, I have owned a Charter Arms revolver. They're not a BAD gun, they are so-so, and they are NEVER going to win awards as the BEST guns on the market. They are a low-cost entry point firearm, and realizing that they are cheap guns for people who can't or don't want to spend a lot of money on a firearm, you should understand that many gun owners will laugh at you outright if you try telling them a Charter Arms is better than a S&W or Colt or CZ or Ruger or just about any other gun other than RG or Armenius.
But, hey! If it's what you like, more power to you!