That sovereign wealth fund with tik tok might set a good precedent; when we have to 'pour money' into these companies we can do so with stake in them held in our sovereign wealth fund.
Extra-legal financial instruments meant to suck money from other federal departments don't strike me as a good precedent in any sense. I don't disagree though that nationalizing the value of enormous public investments is something we should be considering, looking at you oil industry. But until congress appropriates the money under law it's a pipe dream or theft.