Would you mind explaining how in the hell you can do more damage to energy?
I am not Tequila Sunrise, but I think his explanation is pretty clear. The rationalization in 3e is that zombies, being animated dead flesh, lack "vital spots" necessary for a SA. The question then becomes, why do normal attacks damage and eventually kill the zombie, but SA does not apply? Imaro's reply is that loss of animated material (via wounds) might cause the energy to dissipate. Or alternatively, that form and energy are intertwined so that damage to one damages the other. Tequila Sunrise's response simply represented an expansion of that explanation to SA. The SA represents severe damage to the animated form, which then requires more energy to be maintained, represented by the loss of HP.
How exactly does a Sneak Attack someone do more damage to energy
As above. SA works just like a regular attack, it just does more damage. The protest is, "but SA represents hitting vital spots, and the zombie has none!" but that's begging the question. If the zombie (or any creature) can be killed by a regular attack, it has vital spots that targeted by the rogue. SA is justified the same way a killing blow to a zombie with a mace is justified.
Hit points, and reduction thereof.
Saying Uhhhhhhhh implies that this is some kind of common knowledge that everyone should know. Makes no sense to be honest.
The "Uhhhhh" applies to Farscape's contention that Tequila Sunrise never described why SA would work on a zombie, when in fact Tequila Sunrise had done so just 11 posts earlier. That TS did indeed give such a description
should be common knowledge that everyone should know, regardless of whether one buys it or not.