Hopefully we will all live long enough to get to the inevitability of no longer being able to ride. Delaying the inevitable is the very point behind all of these options.
We all will eventually have to make a choice regarding whether or not we continue to ride on two wheels. Each of us will make the choice that we feel is best for us. If we feel that we need mechanical assistance to continue riding, and it can be done safely, what is wrong with that? Nothing- I say go for it.
Many of us choose to ride when it is too cold to ride, when it is raining, when it is too dark to see, and we do so regularly and often. The only reason that we are able to ride under those conditions is because of the assistance of technology that artificially manipulates the environment to mitigate the effects of the cold, the rain, the darkness. None of the water-proof gear, the high-tech clothing, the electrically heated clothing, the artificial lighting, etc., that allows us to do this are natural either. They are all man-made interventions. They are tools that allow us to manipulate conditions enough to allow us to enjoy motorcycling in these conditions. Without them doing so would often be impossible. Systems like landing gear, trike conversions, three wheeled bikes, and whatever other aids that might be available, accomplish the same thing. They are a tool that allows a motorcyclist to motorcycle under conditions where they might not otherwise be able to unassisted. The only difference is that these tools manipulate the conditions of the person rather than the conditions of the environment. If it can be done safely, there is nothing wrong with that.
Many people who have deminished stability adopt the use of a cane, or a walker, or a wheelchair. There is nothing wrong with any of those choices. Disabled people use vehicles that have been modified to allow them to operate that vehicle using hand controls only. Without that intervention they would not be able to drive a vehicle. These systems accomplish the same thing for motorcylists. If that is what a person needs to be able to continue riding, what is wrong with that? Nothing I say.