Not sure if you've read further into it, but the idea is to minimize the number of votes at full power from 20, which is what it is now, to 5. This has no effect on people with less than 300 SP (as to adjust voting power via the UI requires that as a minimum to appear, unless you use the CLI_wallet). You can vote as many times as you'd like. All this changes is the number of votes at different voting power percentages. As an example, you can make one vote at 100% voting power, followed by 80 votes at 5% voting power.
We had a long chat about this in IRC I don't believe the human experience should be harmed so much for the sake of killing bots. To me this is another step in a pattern of anti-bot solutions that is throwing the baby out with the bathwater.