I could be wrong but I remember voting and they actually had it split into two questions. The first was whether you wanted to keep the current system, and the second was if no what system would you prefer. Unfortunately people just decided to stick to what they were familiar with even if it's a flawed system.

EDIT: Double checked and yeah, it was two questions the first of which was whether the system should change or not. 61% of voters opted to keep the existing system. https://en.wikipedia.org/wiki/2018_British_Columbia_electoral_reform_referendum