That’s a very odd perspective.
Could you explain how government research funding constitutes forced speech?
If an individual who receives a government tax credit (say EITC) speaks out contrary to your politics, is the government allowed to withhold that credit too?
My money is taken from me at gunpoint by government forces I cannot resist without facing life in prison. I don't want this money going to random causes I disagree with. The government should be far smaller or we cannot have rights as the government will intrude on us more and more.
> I don't want this money going to random causes I disagree with.
There certainly is _no_ government spending supported by _all_ Americans, so your position isn't a very practical approach to governance.
Lots of government spending is supported by the vast majority of Americans. Police, courts, fire, ambulance, and military (though size is up for debate).