So, in theory then you could propagate a plant via trimmings eternally?

Would it follow that a stem plant would never die of old age (regardless of trimmings), if kept in ideal conditions, whatever those may be for its species? Or are you saying that a trimming is a new plant in a similar way to actual sexual reproduction / meiosis and inessence hits the reset button getting a new lifespan from the parent plant? Even if the lifespan is 1,000's of years...