Technically you could just mis-understand the new functionality.
- Aside from the fact that you get 5 votes you also have the ability to select a %-age. So you can chop up your 5 votes into 20, by using something like 20% on each vote
- normal users probably vote like 5 times a day. I am sure the team had a reason to make this 5 and not 7 or 10.
- due to the %-ages we can vote much more deliberately and give one single post up to 20% of all of our voting power and also less than 1% if we so choose to.