F2Ps goal was to have more players around so subs would have people to play with, not to be a trail. I have never seen a Bioware rep state F2P is a trial, do you have a source for that?
The reality is you need lots of people around for the MMO part of MMORPG.
To give a real world example of why F2P players important, I discussed coming back to play with a friend who, left the game around 5 years ago. We were going to level and do some PvP to see if we wanted to play long term. I came to check out things first, found out about the 5 pvp matches limit per week for preferred. He decided that if that's how they are treating players he didn't want to play. My temp sub run outs in ~30 days. I won't be renewing it.
There are those who will be happy to see people like me go because I won't deal with EA / Bioware's stupidity but you need more people than the hardcore fanboys if you want to avoid another server merge.