Because it's ultimately designed as entertainment and 99% of people want to get to the most topical points as soon as possible. People like us our in the minority and will actively seek out material on those teams. The average NFL fan thinks about the Patriots and thinks "Brady replacing Bledsoe, the Tuck Rule/Snow Game, beating the GSOT, Spygate, the 16-0 season with Moss and Brady breaking records and loss to the Giants, Brady's injury, struggling to get back to the title, the on to Cincinatti moment and the turnaround of that season to show Brady still had it, the Butler interception, Deflategate, 28-3, then the final run and the breakdown of Brady and Bill leading to his exit". Maybe you talk about the rise of Gronk in there to cover 2010 and 2011.
And that's a lot to cover in itself for the length of this series. And as much as it sucks, this was made for a wider audience and things we care about just aren't as important to what the target audience wants. Sometimes it's nice to step back and realize not everything is made for an audience of you.