Poyer took it way past the whistle? That's aggression to you? I've seen far worse after a whistle.
Maybe something was said by Poyer, but I didn't see anything that Poyer did physically to warrant that reaction from Landry. Milano still had a grasp of Landry after Poyer had released him, so why would he shrug Milano off and attack Poyer instead of Milano if the issue was a Bills' player taking it way past the whistle?
If Drake was responding to four Bills' players who "surrounded" Landry with the intent to intimidate him (versus to keep things from escalating), then shouldn't Drake have thrown his weight around at one of the four as to show loyalty, courage, and to even things out?
He attacked Poyer almost as soon as he saw Landry go at him, he never saw the four Bills players you imagine surrounded Landry; Drake wasn't defending Landry from Bills' players who were trying to bully him, he was inspired by Landry's overreaction and simply wanted to get into the fray.
There have been games where I've wished the Bills had more nasty in them, but they aren't that type of unit...you're giving Drake way too much credit and turning this McDermott-coached team into imposing, ruffians in that moment.