The zip tie will change the permittivity of the wire insulation. Rebulx may complain of dull highs.
I wouldn't jest about such things ...
someone might believe you ...
The zip tie will change the permittivity. No question about that. The change will be so small as to be negligible. Rebulx may possibly be the only human who could hear the difference particularly when he is in a thigh lock.
Then we also have to remember when the wires are in a loop or a U pattern, the capacitance will surely change.
Best for Rebulx to stick with headphones.