Teams have played in smaller or worse environments before as part of expansion or relocation. The Titans/Oilers had a plan to play in Memphis for two years at the Liberty Bowl because it was a bigger stadium, but Memphis got such low attendance they played at Vanderbilt which only sat 40k for their second year before their stadium was built. The Pilots stadium was terrible their first season in Seattle (maybe not the best example since it played a part in their move to Milwaukee).
The Coyotes are an extreme case because that's a team that was kicked out of their stadium and is still staying in the same media market without a plan. The A’s are also a bit of an extreme example in that the move has been approved and the stadium plans are technically approved but there are a lot of fights coming, so at this point I’d say they still don’t have a concrete deal in place.
As an aside, I’ve seen a lot of talk of how it’s unfair to pull Oakland’s team away. And while the circumstances of how it’s happening is awful, if there’s a franchise that has to move, it’s the A’s. Their time in Oakland only just surpassed the time they were in Philly before moving to KC. Why not move the franchise that’s already moved twice before? It’s part of their lore now. Set the clock at 50 years and they can move from Vegas to Portland or Mexico City or whatever the new hot sports town will be in 2070.
And the ironic thing is they’re only in this position because they tried to help the Giants, who probably have the most “what ifs” for relocation of any MLB franchise. The two closest attempts were Toronto before the city of SF filed a restraining order to keep them and then the Blue Jays were awarded as an expansion franchise soon after. Later they had a deal signed to move to St Petersburg and the NL voted it down for whatever reason. So with Candlestick being awful, the A’s said the Giants could have San Jose for territory to help with a new stadium. Of course, SF ended up building downtown, but kept San Jose as part of their territorial rights, so when Oakland wanted to move there a few years back, the Giants nixed those plans claiming encroachment.
