Honestly, I rather have some info than nothing at all. And I even remember back in ME3 when they released gameplay screenshots of certain elements that they would have in the game, yet they didn't appear at all and were never explained why and this was back in 2011, in which we had way more info on the game than now.
A game is constantly going through changes, especially early on. Certain elements will change, and NOTHING should be taken as a 100% fact. Even BioWare have said this.
I agree that a better balance must be struck. Though this is probably in reaction to all the hate ME3 got for getting overhyped and the developers not being cautious about what they were saying close to the release date. One example I remember well is Mac Walters saying, just a month before release, that the Rachni would have a massive role in the game, even in the final battle. We all know how that turned out 
I think most fans who are rational know that the game you get is never exactly the game that is advertised. However, for a game that is for sure past the mid-point of development (according to Yanick's quote back in April 2014) by now, it would be a good time to start talking about your game a bit. In my mind, this game is coming out in 2016, but for a game that started development back in Fall 2012, the dev cycle is for sure going past 3 years (i.e: longer than DAI, which had to be the sacrificial game to develop tech for next gen consoles).
I'm not saying that a longer dev cycle is a bad thing (au contraire, as we say here in Montreal
), but it makes me wonder if either:
1) The game is very advanced and they just don't want to show it to us (
)
2) The game had development trouble/changes which explains the long dev cycle
3) The team was working at a slow rhythm on game development (i.e: small team, just brainstorming) for a while
4) They're just taking their time and want to make the best Mass Effect game ever 
I'm not saying any of these scenarios are bad. I just want a balance of info for a game announced two years ago and for which we've only gotten concept art and cryptic ''It's not called Mass Effect 4!'' comments. 