Why is it important to track down the meaning of Abracadabra?

Full transcript for Part One: Abracadabra Decoded including References

A quick search on the internet will return over 3 million results. So it seems, this mysterious word has quite a reputation.

According to the people at Vocabulary website, “Abracadabra… it’s a load of gibberish and nonsense… meaningless”. (https://www.vocabulary.com/dictionary/abracadabra - Para. 1)

Over at the Wikipedia, they mention only one theory, Abracadabra might be from the Hebrew meaning "I will create as I speak". (https://en.wikipedia.org/wiki/Abracadabra - Para. 1)

The folks at World Wide Words say it may be a mistaken translation from the Greek abraSADabra. (https://www.worldwidewords.org/qa/qa-abr1 - Para. 2)

And finally, a website called Today I Found Out, has a long list of claims associated with Abracadabra. One being, Abracadabra is derived from the Hebrew phrase for the Holy Trinity, as in Father, Son and the Holy Ghost.

Whether it’s an official title is unclear, the phrase is as follows; Ab Ben Ruah Kaddosh, also pronounced Kaddish. In Hebrew ab means “father” and ben means “son”, while Ruah Kaddosh is meaning “Holy Spirit”. (https://www.todayifoundout.com/index.php/2013/11/origin-word-abracadabra - Para. 3)

Maybe I’m grasping at straws, however I think, if the title or phrase 'Abracadabra' really is another name for the Trinity, then it follows, if we discover its true meaning, we may also discover the true nature of the godhead of the Abrahamic religions.

Sounds like a bargain to me. It’s worth a try. If it turns out, it would be the best ‘four for one’ deal, if ever there was one.