Yes, they are mostly easy. As a healer (sorcerer), I can say it is a challenge to maintain my force on some bosses (for example, the boarding party in Mandalorian Raiders). I am OK with them being moderately easy, though. At this point, I don't want to be wiping over and over in a flashpoint while I am trying to level up.
I say all of this with the caveat that I presume the higher level flashpoints will be more difficult, and rightfully so.
Just my 2 credits.