The point isn't just showboating. IMO he uses it to confuse his opponents, and make them second guess their approach to the fight. Most of the time it works really well and his opponent throws his game plan out the window.
So here's a scenario, you are a great fighter standing across the ring from Anderson. You know take-downs are his weakness so you storm across and try to press him against the cage, to set up the take down.
Its not working, so you try to start throwing some punches to soften him up.
Its not working.
So then you just lose it and try to take his head off.
he drops his hands and lets you go to town and it does nothing.
What do you do from here?