I don't need the government's permission to criticize them.
No. It commodifies speech. Which then obviously means it is no longer free.
But the Logic if claiming Money is speach would mean that you CANNOT oppose corruption, or any spending, since all if it would be speach, or any use of Money, what essencially you're left With is plutocracy (which is basically what rightwingers wanted all along)
Money is effectively a replacement for town square and soapbox to stand on. Without it you cannot meaningfully express your ideas to a significant number of people. So yes restraining the ability to spend restrains free speech.
On the other hand given the Internet that may well become a moot point in the future.
Quo usque tandem abutere, Trump, patientia nostra?