Buford T. Justice said:
The Oiler fans did not want the team to be moved.
Once it was declared that the team was moving, and that there was nothing that could be done to stop it, yes, some people started rooting for another team.
I'm old enough to remember the early days of the AFL. the Oilers were GOOD, and their signing of Billy Cannon brought the entire league credibility. But from the mid-60s until the mid 70s with the coming of Luv Ya Blue, the Oilers were just a flat out dog of a franchise.
In 1972, I show up at A&M. I grew up an Eagles fan, so no way I could root for Dallas, just not in my DNA. So I adopted the Oilers. Gotta remember, in 1972, there was no NFL Network, no Direct TV. No Sunday Night, or Thursday night. No Internet streaming. There was Monday Night, but because the Eagles suck so bad (as did the Oilers) they were hardly ever on Monday night. So I adopted the Oilers, and I felt right at home. What was kinda off putting was the fact that almost none of my fish buds from Houston, there were tons of them, rooted for the Oilers. They were all Cowboy fans. They didn't care at all about their home town team. It was so bad that when the Oilers were at home, they would ask the local CBS affiliate to black out the Dallas game. If not everybody would stay home and watch the Cowboys instead of going to the Astrodome and see the Oilers.
It was exciting watching the Oilers rise up under Bum Phillips. Those late 70s Oilers were just a great team. Their only sin was being in the AFC Central with Pittsburgh. Had the Oilers been in the NFC, they would have played in maybe 2 or 3 Super Bowls.
OBTW...this is a HORRIFIC collapse by the Eagles. This came out of NOWHERE. If Dallas wins in Washington, which they will, and we lose to the Giants in the Meadowlands (very possible) we're still in the playoffs, but we gotta play all our games on the road. Horrific collapse.