USA government spending as a percent of GDP is on the lower side of developed nations (high 30s depending on the source). Our peers are Luxembourg and Norway, and we’re well below France and Germany. Granted that we are one of the few developed nations that don’t provide universal healthcare which biases us lower.
While I’d share your concerns about fiscal sustainability, we’re an outlier on tax receipts not spending.
I think the worrying part is the debt/GDP ratio where the US is among the top 10. Also there's a high amount of private/household debt.
I'm not from the US but I'm worried. The economic signs are worrying and a US that is overloaded with debt has been historically devastating for the global economy.
All the political uncertainty and questionable economic policies don't help that either.
While I’d share your concerns about fiscal sustainability, we’re an outlier on tax receipts not spending.