Totally dude! Text chat in game will DESTROY the way people use.... text chat somewhere else to meet up and talk.

I mean.... typing up "hey need 2 for VoG must be 27+ with mic" in the game? Not sociable at all.

Typing that same stuff on GAF or DestinyLFG? Totally social broseph!

Not for me personally, I still only talk to my friends when playing Destiny. When I play with randoms I don't even have my mic plugged in. 

Is the voice chat working now?

It will make you don't talk with others people or have any connection at all.

I do that in Warframe... I know how it works.

It is always worked for your fireteam... there is no way to play Raid/Nightfall/Weekly without a fireteam (unless you do solo)... so the voice chat works 100% in the cases of non-matchmaking.

Actually for me it is the exact opposite.  Rather than making friends in the game I am only exclusively playing those pieces with RL friends.  If there were matchmaking, and in that matchmaking (and the matchmaking already around) there were also opt-in voice chat already, I would have more ingame friends to turn to when needing to fill a hole here or there.

To answer your OP: it is not yet the social game they promised at all.

Did you play Raid/Nightfall/Weekly in a random fireteam with mic off?

I can see that working with Nightfall and Weekly but not in Raid.

PS. Yesterday I beat the Raid with a random group and after that everybody said we can play some Iron Banner now... so we playing some Crucible matches talking about a lot of things even not gaming related... it was fun and everybody give a lot of laughs... this is "social" in my view.

Short answer: Nope.

I don't see how playing with somebody via matchmaking make you be friend of him... it is the opposite in my view.

About your answer I agree... I think neither Bungie predictied how the social the game could be due the lack of social tools... it was just a good coincidence.

The Brainwashing is strong with this one.