Reason for having higher minimum might be fact that soft cap is reached so team is mostly focused on bigger investors,who could maybe even afford to get enough FABA to have voting rights,as you need $2000 worth of tokens for that.
The soft cap has been already reached. Big investors usually join ICOs in private sale. The minimum investment of the second round should be lower to let more investors join the ICO. It can also causes the tokens to be distributed among more people. Now there is nothing to attract those who didn't invest the first round. The minimum investment is higher and there is no bonus.
If someone is interested in the project would have invested in the first round and there is no need for the second round.
There is no need for this project to have a lot of small investors.This project is not about decentralization.This is capitalism.You either have voting rights or you don't.Faba is security tokens, you get shares of Faba when you invest and if you have enough shares you make decisions about companies investments and direction.