I think this is really only a problem because the titans are way OP right now. Once they get adjusted somehow so you can defeat one without a higher level titan of your own, that tech will really be worthwhile. Perhaps even too worthwhile, as I bet the pros can do some ridiculously fast colonization and will immediately build three civic labs to use it.

The "honor among rogues" tech is a double-edged sword for the rebels.  You can expand quickly but your ships won't level as much.  It may be the only thing giving other factions a chance.  If the rebel titan leveled up quicker, their rush might be too powerful.

If you'd prefer to level your ships against neutrals, I'd say play loyalist.  If you'd rather eco rush and build a huge fleet early, the rebels are the way to go; you just have to know when to stop colonizing and start building frigates so you aren't caught off-guard by a battle-hardened opponent.