James Ohlen left Bioware

Sorry, but that's a misrepresentation of what happens - first: James Ohlen was pretty clear that he's leaving game industry as a whole to focus on a more personal project. As he's someone who has spent 22 years in the company, it is reasonable to expect something like it. Big projects like AAA games are intensely collaborative processes in which most individual gamedevs are small cogs in a big machine, and it isn't the first time (or in relation to Bioware) that I've seen devs leaving big companies to pursue smaller, more personal projects.

Second - is it really intended on your part to suggest that people who haven't worked with Bioware for 15- 20- or 22 years are 'noobs and inexperienced devs' or that somehow years spent in the company means that they're the very best (not a dig at Mr. Ohlen, just pointing out that veteran status doesn't mean that the younger talent is worse)?
The fact that BW Montreal was inexperienced and left to its own devices while Edmonton focused on DA/Anthem doesn't mean that all of them are, or that spending 7, 5 or less years with Bioware makes someone a noob. A ton of people who come working for Bioware now are industry veterans in their own right after all.

There's still an overall worrying trend of BioWare veterans leaving the studio/abandoning ship at a time when the future of the studio is the subject of considerable doubt.  They might be getting replaced by industry veterans from other studios, but that's neither here nor there, the people who made BioWare's reputation worth something are leaving or have already left, and that in itself is a worrying trend.

You mean that people who have worked a decade or two, which in itself is a considerable feat, are nearing an age when they feel they want to retire/do something else other than AAA games? I actually expect more veterans to leave at some point, not because they're 'abandoning ship', but because one can expect that after working so long in a stressful industry they want a change of pace.

I'm sorry, but that's just... oversimplifying things. People can have many different legitimate reasons why they want to leave the company they worked for, even if they're considered founders and especially after they spent more than two decades in it.

I mean... look at Alexis Kennedy. He 'abandoned' his first successful indie studio that he created, but not because they became corporate shills or something - he just wanted to do something else that he felt he couldn't do with Failbetter at that point. Look at Gaider - he felt burned out and switched the project only to find himself in Beamdog... and then left Beamdog in February.

Is it because FB and BG are now creating generic games 198670324?

Oh BS. We both know it's BS. Times change, companies change, people change and many develop an itch to do something else (or just something less stressful). The fact that something is someone's brainchild doesn't mean that some creators are not afraid to let the thing go even if they still care about it. We don't know the details of all that's transpired, but we know that all recent departures seem to have been amicable and, from what I've seen, a lot of them appear to be confident that they've left the company in worthy hands, instead of just running for hills and crapping all over folks they've leave behind.

I get the feeling less people have been leaving Bioware during Anthem's development than Andromeda's development.
I'm very likely not going to purchase Anthem, unless it manages to change my mind in some way, I'm not very sociable and I already have Destiny. (I've been thinking about getting Destiny 2, but I'm not sure if that whole controversy thing is still going on and I also want to see how the upcoming Forsaken expansion is.)

I don't think so, I think its more likely that people will eventually wake up and realize that BioWare isn't the developer for them and finally move on.

I never said it would be anytime soon, for I don't believe BioWare is going to crash and burn anytime soon either.  It took a lot for Visceral to close down and because of location I think it would take more for Edmonton to disappear.

It's because EA shut down and absorbed Visceral Games just like every developer they bought.

They haven't shutdown and absorbed every developer.