Yeah, you're probably right, if we're going to blindly assume things by isolating a few words in a wikipedia entry we should probably assume a high profile defense attorney working for a high profile organization on high profile exoneration cases is, what, bribing or threatening eye witnesses to change their stories? Instead of just doing what the original defense attorney's didn't do by exposing doubts and questions in their testimony and finally having witnesses recant which isn't all that uncommon in exoneration cases, nor in general?
Yeah, there's no way to know, so let's not discuss it by assuming whatever presents the most compelling discussion point and discussing that until people counter the point and then let's claim it's not worth discussing by adding your parting discussion point.
There's no way to know a lot of things, but that doesn't mean the only or even best explanation is the most scandalous. My guess, in this case, is it's the simplest, most boring explanation that witnesses being coached and encouraged to testify on things they aren't actually sure about is pretty common, and shitty defense attorneys for poor clients allowing it to happen is pretty common, and exonerations based on further investigation and questioning into witness testimony and having them admit they weren't sure or recant is pretty common.
Remember how the victim of Avery's first false imprisonment falsely IDed Avery and later admitted she wasn't sure and only pointed to him because that's the direction the police seem to be leading her toward?