Yes, the age discrimination is real. I was laid off in late 2017 and saw it since the announcements were made, and continue to see it. I even had a case going in HR on my situation where I was daily experiencing age discrimination (I was just over 50) when I got word I was on the "impacted" list.
And yes, I got the package and because I signed, I cannot be part of a suit. Funny, after I got word the HR person emailed me about our meeting, I replied "thanks but I just signed a document that everything I told you didn't happen, so no need to meet." The generosity of the package was simply bribes. BUT, the package and signature does NOT mean you cannot be called to testify in a suit, so if you are doing a class-action, reach out to anyone impacted who can chime in on their personal experience. Go get 'em!!