I don’t think you need crazy theories to suspect that there’s an essential quality to the totality of life that is highly adaptable, especially at the cellular and microbial level. Like there’s something going deeper than DNA, mutations and all of that. Some generalisable self organising ability that’s been cracked by the assembly of proteins/fats etc of cells. We shouldn’t underestimate it. Hell, we are literally one such adaptation.
Otherwise, yea, earth life has prior experience in space and it’s been busted!