If I suddenly got triple my paycheck, I would ask what is going on because there most likely was an error. If drug dealers that hand out around my work place start getting a paycheck and they end up making more than the people working. Then you are damn right that I'm going to complain.
You are right that credit farmers will still credit farm but there is a huge difference. They won't be generating the massive amounts of credits and greatly increasing inflation without the large amount from slicing.
People like you just look at what is in front of your face and not the bigger picture. For example say they leave slicing exactly how it is. The rate of inflation greatly increases and the value of your hard earned credits drop. Eventually credit sellers will be selling massive amounts of credits for practically nothing. Which means less people will buy credits by going through the cartel market so less money for Bioware. Which also leads to people getting bored with the game quicker and moving on since you can get everything so easy.
Lets also not forget the cheating environment vibe giving off by all the bots farming the nodes which results in frustrated people. Yes there will always be some bots but it is 10x worse when you watch them get massive currency when it can easily be stopped. Keep in mind this is just a few things for example, this has a huge chain reaction on the game.
You are also hilariously wrong about a slicing change having an effect on players. People who buy credits don't farm in the first place. That is the whole point of them buying credits so they don't have to farm. Also that fact that people keep screaming how great credits from heroics are and they are so much better than slicing. Then why are a little extra credits from slicing needed? Just make an alt which is more fun and do more heroics?
Lastly some people keep implying there is more important things as if altering slicing is a month long project. When in reality its a few hours at most of work so its not going to take away from other things getting fixed.