Do I have to meet the energy requirements for the attack I choose with Mew ex's "Genome Hacking" attack?
No, you do not have to meet the energy requirements for the attack. However, if the attack says you must do something or the attack does nothing, that part still has to be done.
Source: TPCi Rules Team (2023-09-28)

Relevant cards

Note: All applicable cards may not be listed below.
SV35_151
SV35_151