I am bit confused, what sort of features are missing there? Like any example pictures where you see the impact of microbial life in comparison? Also confused b

I am bit confused, what sort of features are missing there? Like any example pictures where you see the impact of microbial life in comparison? Also confused by the fact that rock looks like its maybe few feet across (admittedly difficult to judge the scale), so the effects and development I would imagine are quite different from large-scale features like discussed in the article, or what I associate terragen with.