Unpopular because it's so flagrantly ignorant. How much do you know about the "egregious" expenditures by rank-and-file federal employees just doing their jobs?
Maybe it is, but also maybe it's actually really expensive to run a country as big as the United States, and maybe people offering simple truisms and simple solutions to complicated problems are just full of shit.
$2 trillion is all of the discretionary spending including defense. Are you saying the whole federal government except for entitlements should be eliminated?
Anyone who worries about spending without talking about taxes is not serious or being deceptive. The cause of the current deficit is mostly Trump tax cuts. Plus all of the temporary spending to get out of the pandemic recession. The solution is to remove the Trump tax cuts.