This game is NOT an RPG. It is IMPOSSIBLE to rolepay

In the first hour alone the auto-dialog completely torpedoed my attempts to RP about a dozen times. 

The (endless) auto-dialog between Ryder and Liam even creates a completely different character I was trying to play from the rather limited options I had from dialogue choices.

If you are trying to play Ryder as anything but a joker, you're ****ed.  So many forced attempts as humour my character wouldn't say! Being buddy buddy with a guy he doesn't know even though I want him to be detached and annoyed at his situation.

Apart from the "we're explorers" stuff, there hasn't been any way for you to indicate why you came on this trip in the first place. Surely this is the most important RP question to ask in the opening of the game? Were we forced by daddy? Did we genuinely want to come?

ME has never been perfect at RP obviously.  Although IIRC there in ME1 there is only ONE use of auto-dialog from Shepard (a neutral line in the descent to Ilos), so hand-waving character contradictions was a lot easier.  But ME:A takes it to a new low.

Can you name me a AAA rpg where you can roleplay as much as in bioware games?
 as fantastic as even withcer 3 was i always felt Geralt was way more predefined than any bioware protagonist.

Andromeda was trying to do two contradictory things with the PC. Players were allowed a degree of customisation with Ryder, yet our parents were locked in and personalisation throughout the game was very limited. For example, I hate Liam and would chuck him off my team after his extremely unprofessional behaviour on Habitat 7, yet the game locks Ryder into being friends with him. Everyone had their Ryder railroaded along the same general line the writers wanted to go in. You either start with a blank slate and build from there, or you go with a model similar to the Witcher. You can't do both.

If roleplay is the only concern, then we start with any of Bethesdas open world RPGs of a past decade...

Geralt, Shepard, and Ryder really aren't all the different in setup.  Certainly not opposites.

A create your own protagonist would be more the Champion of Cyrodiil in Oblivion (even the Dragonborn in Skyrim was knocked on by Bethesda fans for being too pre-defined in terms of their RPG's).  A character that is just dropped into the story and allows you to define them.  This has never really been the way Bioware does it.

We can talk about what kind of character Geralt is, but we can't really talk about what kind of character Shepard is due to him or her being vastly different. Sure Bioware doesn't make completely blank states to play, but their characters are far from Geralt who is in another opposite of RPG.

Speaking of Bethesda, perfect exemple. Look at Fallout 3 and Skyrim compared to Fallout 4, roleplaying took a rocketing nosedive.

Then go play an rpg with a voiceless protagonist. That is not ME. ME has never claimed to be full rpg. There have always been limits as the character has a set path but you can still mold the personality. If I want the kind of experience you are after I play TES or Fallout etc..