Senate GOP Blocks $2k stimulus checks

I sincerely don't want to enter the pro- or against-Trump discussion (I don't care too much...), and at the same time I don't want to sound too aseptic toward the situation that Americans are going through. Forgive me for any political tone I couldn't remove from the following question!

I'd like to understand - sincerely! - how such a move can be justified even at a political level. Bloomberg proposes a "rebuff" of Republicans against Trump, but they're paying this rebuff with the anger of millions of Americans that won't receive this money if not for this kind of childish behavior.

So there should be some thing I am missing, I'd like to understand better: what's the justification for such a move, beyond playing this strange game?

"People get the government they deserve. Good, moral people concerned about others get a good, moral government that cares about people. People that are greedy, lazy or apathetic get a government that is greedy, immoral and unconcerned with the public’s welfare. In a democracy, each of us is responsible for the quality of our government.”

It's $2000 of pure inflation - but with the backdrop of the obscene National Defense Authorization Act which is a slap in the face.

If Trump were actively trying to sabotage this Republican Senate and next week’s Georgia election, it’s hard to imagine how it would look different from what he did here.