Neither Abiogenesis nor Creation is going to be shown true, because it doesn't matter which one is correct, they are both singular events in space-time if true!
As I pointed out with a murder, we don't kill someone else to prove someone else did indeed murder another, those types of events we must look at the evidence and find the best possible answer, what answers all of the questions, what explains all of the facts?
I also see the challenge as showing that it's possible for life to emerge (if at all) by some naturalistic process, rather than the precise way in which it actually happened. But let's keep discussion of how the Universe came into existence for another time and place?
You're correct in this case to say the actual process cannot be ascertained with certainty at this distance in time.
You can make creative stories, for the murder, and where the evidence leads you may find the killer, and even possibly get a confession from them. There are times people profess but they didn't do it either, all of the evidence must line up with our conclusions. So going back to the link about evidence anything is possible, but it is probable?
The "creative stories" are not the truth, they are explanations of what we see in the here and now, and people have taken them to be much more than they should be. I don't make much of the fossils outside of the fact they show us creatures that are no longer here, that we can agree on with respect to many of them.
We get movies like "Jurassic Park" or some exhibits at a museum where an artist takes what someone says about a particular fossil and comes up with a representation of what they thought the fossil looks like, then all the kids walk through the museum and think they know because they saw the exhibit, the only thing they saw was what someone thinks about it.
At some "fossil find" for all we know unless the fossil is intact there could be the fossilized bones of more than one creature and someone combines them into one unique fossilized creature and gets fame for the discovery, who could prove them wrong?