Weld Extensions vs native weld edges

I’ve been going through Aaron’s youtube video (april 2020) on top 10 extensions. He talks about using Smustard Weld and also Auto Weld. The native weld edges (SU 2021pro) seems to produce same result as Smustard Weld. Obviously Auto Weld can help with lots of selection. Any thoughts on this.

I use Weld or Auto Weld depending on the need. If I won’t want to weld a few continuous edges I’ll use Weld. When I want to weld all the weldable edges in a selection I use Auto Weld. In addition to that, Auto Weld automatically welds the ends of Follow Me extrusions so I have it set up to do that all the time.