Chains can be bought as a continuous loop.
Granted doing so escallates the difficulty of installation to include swing arm removal.
The manual on a 2003 Bandit 1200 advises not to use a master linked chain. (That bike uses a 530 chain too)it appeared to be continuous with no colored link.
I did run a clip type master link on a Bandit and one day I did lose the chain due to broken master link.
So I bought a Rivet link tool and have had no further problems.
I once read that dirt can build up under the clip and eventually work the clip off the link.
As for the Busa if you look close you will see the rivets in the Blue link are a little different, I would agree this link was installed when the factory installed the chain on the bike as a rivet type master link.
The shop manual for the Busa details replacing the chain using a rivet tool, but does not comment on the Blue link.
If I recall the stress in a string, cable, chain etc is determined by the equation Stress = PL / AE
P = Load
L = Length
A = cross sectional area
E = Youngs modules, a property of the material
So from the above one can see the stress gets increased if the length of the chain is increased.
So if you are one of those drag racers who length the swing arm and correspondingly the chain you have increased the stress in the chain. The same person might make engine modifications that would increase P in the above creating yet more stress in the chain.
The Busa at nearly 200 hp is runing the same size chain but longer than the Bandit 1200 at bearly 100hp. So I would expect it to stretch quicker if materials are the same.
I have adjusted (Small adjustments) 3 times on the 08 Busa in just 3,400 miles.
Without crunching real numbers one might be concerned if the Busa chain is strong enough for significant modifications.