Of course if you send 2 btc (so arounf 5000$) it's nothing!
But people are complaining because they want to do transactions of 20$ or something like this, and at this moment anyone wanting to do this must pay 5% of the amount sent in fees. And THAT is something that people don't really like ^^
Let me tell you something, people are even moving their faucet earnings worth like 50k satoshi. In order to spend these "earnings", people must likely include fees in the range of 0.001-0.002 BTC. And exactly that is something they obviously are not going to do, and thus they heavily spam the free transaction accelerator service from ViaBTC. Let these people directly also account for a major part of the people that complain....