Had you gone to the link I posted, you would have discovered that we are in fact not talking about the same thing at all. I referenced the dual zone crimp that gets the wire strands and then another section over the insulation for strain relief along with funnel entry for easier wire insertion.
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I have and use a lot of that style butt connector. I also have and use a ton of the solid and brazed barrel non insulated style with separately applied adhesive lined heat shrink in 3-1 ratio. They both have their place. The combo style is faster but bulkier. The other one is far less bulky which matters when you're trying to get a harness through a grommet or you don't want your loom to resemble a python that just ate your neighbor's dog.