You're talking about not only penetrating the cell wall (where that's even relevant), plasma membrane, etc, but you're also talking about having the wrong set of tools once you've figured that out. Bacteria are prokaryotic, which means an entirely different mechanism is required for splicing in nucleotides (whether RNA or DNA) and other mechanisms like transcription work differently, etc.
Moreover, where this would see common use is really an emergency situation. SpaceX has the shortest logistical chain to get a payload to orbit of anybody in the world by a landslide, yet you're still looking at least a few days out, assuming the weather cooperates. Really not ideal for patient care. And then the more sci-fi bits you're asking about need an even bigger payload.
It's unfounded fears like this that have literally set entire continents back decades on research. Look at Europe: When GM crops were first introduced, they got out their pitchforks and torches and moved fast to ban it. It's because of this that they're literally way behind the rest of the world in biotech. Even China makes them look like a podunk redneck village. Did I mention, by the way, that the scientific consensus on GMO being safe is actually stronger than the consensus on climate change? And they even have American progressives, who look at Europe as this ideal model of everything, shouting "Look! They banned it in Europe! Clearly we need to ban it here!" even though Europe is finally starting to second guess its decisions. The US has made similar mistakes on drug research, namely putting shit on schedule 1 when it doesn't belong there, but fortunately that list is short (should be gone entirely IMO)
I'm not an expert on this at all, nor have I ever claimed it, rather, unlike most of slashdot, I strongly believe in taking the time to learn the subject matter at least a little bit before boarding the technology lynch mob. Don't be like Europe or the American DEA: Think first, then act.