Well. I'm glad you looked at the site I mentioned.
A 100 grain bullet at 3,000fps is not the best the 30-30 can be unless all you care about is velocity.
That's a very specialized loading with a very light-for-caliber bullet which isn't good for much else than varminting and not very good even for that.
Varminting is most commonly associated with the following requirements.
1. Very stringent accuracy.
2. Flat trajectories.
3. Guns that are easily shot from a rest.
4. Light recoil.
None of those automatically bring tube magazine, lever-action rifles in .30 caliber to mind and for several good reasons most of which have absolutely nothing to do with magazine tube detonations.
That isn't making the 30-30 the best it can be, it's trying to make a 30-30 do something that it will never do well in general.
On top of that, even the author acknowledges that this loading shouldn't be used in every 30-30 levergun out there. Ammo makers don't have that luxury--they need to sell ammo that is safe in any gun that it might be used in that's in working condition.
I don't know what you mean about it "creating a stir". It doesn't create a stir to try to make a tube-fed, 30 cal levergun, into a varmint rifle. It's not very commonly discussed because it's nothing other than an academic experiment.
People who know what they're doing and want to launch reasonable weight 30 caliber bullets at high velocities don't pick up a tube-fed 30-30 in an attempt to solve their problem. Knowledgeable people who want to get into varminting, don't turn to tube-fed leverguns in 30-30 as a starting point to work from.
He apparently wasn't satisfied with the present loads and/or is an innovator that likes to see where he can go with his continuing research and how far he can push the envelope...
You can do that sort of thing if you're using your own rifles and you handload. It's not reasonable to imply that there's some huge conspiracy keeping the 30-30 from being its best because of mythical safety concerns. There are both real safety concerns, and other considerations that will keep the 30-30 from breaking the 3,000fps barrier for the forseeable future with any sort of round that would be reasonably practical and that could be sold without fear of being sued out of business.
Even Marlin tacitly admitted this when they recently developed the .308 Marlin rather than try to figure out how to soup up the 30-30 any farther. There's only so much you can do with the 30-30 given its limitations.
By the way, the .308 Marlin also uses the elastomer tip to prevent the mag tube detonations that you have stated you believe are impossible. This means, of course, that the conspiracy has spread to other cartridges. Now they're not just trying to keep the 30-30 from being the best it can be, they have actually developed a brand new cartridge and are trying to keep it from being the best it can be right out of the gate.
Or perhaps they added the elastomer tips to the .308 Marlin just so they could keep the mag tube detonation myth cover-up alive for other calibers like the 30-30.
If you want to duplicate Mr. Kelly's work, you'll have to get into handloading. No ammo company is going to load that kind of ammo for a 30-30.
By the way, his loading isn't nearly as innovative as you think. Remington sold an "Accelerator" round for the 30-30 that launched a saboted round at over 3400fps. It's now discontinued because it didn't sell well once people figured out how it performed in practice. It was trying to get the caliber to do something it wasn't designed for and it didn't work well.
Your whole premise is badly flawed.
The 30-30 isn't being handicapped by mythical safety cautions. Not only are there some real concerns about the possibility of mag tube detonations there are also other safety concerns that limit the top velocities with reasonable bullet weights as well as other practical limitations imposed by factors that have nothing to do with tubular magazines.
if YOU want to try it... TRY it. 
Just be sure to warn anyone around you that you are firing rounds that might possibly blow up your rifle. Give them the option of moving a safe distance away from you before you pull the trigger. 
