That's really not the narrative at all.
The fans know what's going on and they're not stupid. The Coliseum is a 60-year old dump. Everyone in Oakland knows this.
They've been there twice as long as most teams stay at a stadium. The Coliseum is older than ten franchises and 12 teams.
Those franchises... all but one has built their SECOND stadium (Arizona, who's working on it). The Texas Rangers are in their THIRD stadium since moving from Washington, and the Washington Senators played Oakland at the Coliseum.
The fans in Oakland have seen THIRTY SEVEN new stadiums deals done in other MLB cities, and they're still playing in a place that has sewage leaks flooding the clubhouses and a family of possums in the visiting TV booth.
They're not being hijacked by a billionaire owner who refuses to spend. They play in a soulless concrete relic that doesn't bring in revenue for the team.
If the A's got a deal done for Howard Terminal and signed it today, there'd probably be 25,000 in attendance that day just to celebrate with other A's fans. And the next day, attendance would be back to 3000 until the new place opened (or the team spent money)