You keep saying this. Almost verbatim, over and over. That was why I said just stop. This is a giant strawman. It's not accurately representing what those who might disagree with an "all in" philosophy are saying. But you are happy to just take potshots at people instead.
NO ONE is against getting better. The choice, however, isn't get players for free or do nothing. It costs something, and different fans (and GMs!) have different appetites for what they're willing to give up to make marginal improvements. That's ok.
We also have no idea what people were actually asking Arnold for. If the man who built this team into what it is right now didn't see a deal worth making, I'm ok with that. Others might not be, and that's ok too.