Well, to be fair, the two founders of BioWare both retired in 2012.
All I'm saying is that there's a pretty clear correlation between the quality of BioWare's games going downhill and their purchase by EA. I think most would agree that their last two truly good games were Dragon Age: Origins and Mass Effect 2, and both of those were released shortly after the acquisition by EA, with the majority of the development time of Origins being before EA bought the company.
Since Mass Effect 2, we've seen:
Dragon Age II - An unfinished, buggy mess that was nothing like the first game.
Mass Effect 3 - One of the worst endings of all time, and clearly rushed.
The Old Republic - An MMO that I haven't played, but it's gotten lukewarm reviews. (Also a bunch of TOR expansions that I also have not played)
Dragon Age: Inquisition - Basically the definition of mediocre. At least it felt finished, unlike the second game.
And regardless of which decision makers are still at BioWare, we've seen EA do this a dozen times before. Basically every time they've bought a prominent developer like BioWare, that developer has ultimately fallen apart and, eventually, been gutted.
Here's a list:
http://kotaku.com/an-updated-list-of-studios-ea-has-bought-and-then-shut-1689498614
By the way, if you type "companies ru" into google, the first option is "companies ruined by ea."