Its the other way around dude. Cutting a stem causes auxin and cytokinin release and you get auxillary dominance as a result.
You will not get the same result with LST as regular topping. They're simply different techniques. You top to get an even structured canopy. When you LST you loose a lot of that control and it's also more work for no real gain if you compare to regular topping and supercropping techniques.
It's a complete mess trying to lollipop a LST'd plant. They look like a uncontrolled mess most of the times. Cheers!
Again, not here to argue, or really tell anyone what to do. I’ve been doing this a long time. Experimented a bit, outgrown everyone I came up with including the pros. I’ve tried topping, fimming, SCROG, LST, and letting the plant just grow as it wants. SCROG and LST have always given me the best results from seed. Most potent and most terpy. Everyone who has smoked my flower agrees. I top cloned plants with excellent results. But honestly, you do what works for you. Me openly giving advice when asked is simply here as advice, not scripture.