depends on how you measure it. From a financial standpoint, it's almost certainly not a bad move. They're going to make more money in Vegas. With a giant new stadium and lots of wealthy companies in the area to buy up those PSLs and luxury boxes? They'll crush it financially compared to Oakland before a single game is played.
From an optics perspective, though? Yeah, it's a bad move.
From an optics perspective? So you mean it looks bad?
I guess that's true from a certain standpoint.
Everyone was mad at the Rams for leaving St Louis, but after one season, not many outside STL care that much.
They will gain new fans from the move as well though, just like the Rams did.
Cities can't expect to keep teams if they can't upgrade the stadiums. It sucks, but it's the way the NFL works now.