As a doctor working outside of the US, I agree with John. Preventative medicine is sorely lacking in most countries, and it's crippling our industry.

At least it gives them more time to fix bugs... Maybe they're trying to implement ray-tracing for the RDNA2 cards as well.

Stop patient zero, but leave a note for future you to go back in time to do it, thus replacing the motivation but still placing a trigger to go back in time in the first place.

Have we ever had any instruments specifically to look for bacteria in the Venusian atmosphere? Given the missions we've had there so far.

I'd wonder if the harsh environment would provide increased selective pressure on evolutionary changes. Conversely, I wonder if the environment chemistry would cause DNA changes as a secondary form of genomic change. I'd assume it's still obviously Terran bacteria from our analysis perspective.

I wonder how close to our bacteria their genetics would still be, given a few decades of evolutionary time

No