Couldn't you say the same for any service where you _actually_ distribute it as well? "I'm not distributing it, I'm simple charging for the service of easy installation".
(I'm also not AL, though...)
If someone can't argue based on the meaning of the words in a piece of text, what else can they argue about? The grammar? The spelling? Surely we _only_ want arguments based on semantics!
(this wouldn't apply to other laptops that come with preinstalled Ubuntu, for example, since there is no specific charge to add Firefox.)
Installing it on a computer somebody already owns isn't distribution, you can charge for hours there, but installing it on something in the factory is different.