I remember when the TE was more of a blocker. Guys like Dave Casper, Mark Bravaro. They were blockers first, pass catchers second. In fact, they made the All Pro from their blocking skills more than their pass receiving skills.
Nowadays, teams prefer a guy who can stretch the field, like a WR. They're rare. Size and speed that match? Not that common. Then add great hands, and route identification.
Even today, the way Joe Gibbs used the two TE sets to get a second body on guys like Lawrence Taylor are being used. For the Packers, it's used when they believe a lineman is going to be over-matched by a defender on specific plays. We see several plays every game with DeGuera and Tonyan.
In the Packers passing system, if you watch the routes that our TEs run, a large number of them are clearing routes. They appear to be part of the options, but they aren't. Their job is simply to draw coverage away from a specific area. In most cases, to draw underneath coverage off a receiver so the pass to a WR doesn't have to be lofted over a defender, and short of a second defender playing deep.
Anyhow. That's what I see.