This is not just about you sj1. And it is wrong to associate the now (at which this change has not yet implemented) with the future. The assumption that no miner has left the network yet does not mean that this will continue to be the case in the future.
Also, if this vote is biased over something, this is over the âeven higher than 5%â choice, because the under 5% outcome is split into 4 other choices decreasing the strength of the voters that picked something under 5%.
In order for this to be totally unbiased there should be a vote of different percentiles at start and then another one with the exact percentages of the firstly chosen percentile.
For example the 1st voting could have as choices different percentiles as these: 0-5%, >5-10%, >10-15% till lets say 50%. And then there should be another vote with the exact percentages of the previously chosen percentile.
By following this, the procedure would have been totally unbiashed. But we are good as it is today also.