There are scattered videos of people using a bell hammer on a motorcycle chain and it splattered on the tire and slipped. Is that too much on and not enough wiped off?

First of all, there are two main factors in the application to motorcycle chains.
One is that too much is being applied.
The other is that the recommended application is between the final and the chain, on the inside of the chain, but many people apply it from the top, which makes it easy for it to scatter.