Not swapping sides here but avoiding a clinch is not all that easy unless you do a lot of training to avoid it. Then you get an unexpected attack and you have a clinch anyway. I would modify the statement to "try to avoid the clinch". (Geoff Thompson has some very good 'fence' material if anyone is interested in that aspect of training.)
Second part I would say is almost impossible. If someone has you in a clinch it would not be easy to get a joint lock on them as in a clinch everything is locked in tight.
Third part, I agree totally but again it takes a lot of training to get to that level. We call it 'maintaining your centre'.
Fourth part, again not always an easy option especially if your opponent has some grappling experience. Counter throw certainly, but be prepared to be taken down at the same time. Rather than struggle to maintain your feet I would prefer to go to the ground with a knee or elbow to the neck etc. then regain my feet ASAP.
When you say "avoid clinch" as the priority I'm in agreement on one hand and struggling on the other. In a SD situation I firstly want to get away, therefore avoid clinch. If I am committed to fight, my training is to clinch, on my terms, to gain control.
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