Bacteria are not plants, if you have bother to understand the differences in the cells (prokaryotic vs eukaryotic cells), which I have already to explain, a single cell cannot make a plant “living”, but bacteria can live as a single cell, and that’s because prokaryotic cell is sufficient to support a life of a single bacteria or single archaea.
I don’t know how many cells there are with a single plant, but I’d guess there be millions of cells. And different anatomy parts of a plant, like root, stem or trunk and branches, leaves, flowers, etc, would have different properties and functions.
Those fossils discovered on the stromatolites, were bacteria, not plants. If you keep calling them plants, then you would be wrong.
You should call them by the right names.
Both cars and planes have engines and wheels. But just “planes” have an “engine” and “wheels”, you wouldn’t call them “cars”, would you or vice versa?
And just because both birds and planes have wings, you wouldn’t call a “bird”, “plane”, would you?
It is not word game, to use the correct words, because it is best to avoid confusion.
Those fossils of microbes are bacteria (referring to the stromatolites you have brought up), those microbes are not fossils of plants.
Do we really need to continue this farce that you know what you are talking about?
All you are doing, is confusing yourself, because you are too stubborn to admit your mistakes, and worse, to stubborn to learn from your mistakes.