You can't have it both ways. You might only be "pretending" to be withholding your vote but your "pretend" stops when all the people you've dissaffected don't show up.
Studies show that even in states that still do a plurality vote but encourage 3rd party voters see higher overall turnout and generally favor democratic candidates. The only ones disaffecting voters are the ones pushing the narrative of "a vote for x is a vote for y".