Most are too engross in mundane life to bother building relationships with higher entities. The laoshi was smart, he shorten the chant to the only deity who will even bother to response to someone who hasn't build relationships with him.

Use the lao sai as bio-weapons to make enemy lao sai too....🤣

Just like Seagate and Western Digital cut headcounts when production down.

But the video miss a very important point.  The relationship with god/goddess/patron deity/demon in which the invocation spell is based on.