Eh, not really. The ground fighting looked nothing like Aikido, and you can tell he pulled it from another system almost instantly. Ground fighting is kind of the antithesis of Aikido, and it makes sense why its pretty much non-existent within the system.
Which is true, but he's adding something that was never really part of the system, and frankly it doesn't really fit.
That's quite a stretch. Fighting from your knees is quite a bit different from fighting off your back.
Boxing has the clinch. Is boxing now a grappling art as well?
Would you be kind enough to actually show them? I know of only one.