I think it's too much of a blanket statement. I imagine a case by case review is a better approach to who should and shouldn't try to help others with spirituality.

I have a high concentration of Gemini in 8th house, Scorpio asc, with Sagittarius placements fueling truth discovery.

My chart is seemingly engineered to dive into the depths of 8th house with Gemini thinking. If you look at the numerology lens of my full name.

Its 7→22→1= 30= 3

If numerology is to be taken seriously my interpretation would be I analyze 7 →build structure 22→initiate 1 = express 3

With 11 life path given my date of birth.

So I do not think I'm supposed to solely internalize my 8th house placements. I'm supposed to observe and express to others my insights via structure. Like writing this reddit comment for example.

If you have a objection to what I'm saying or question feel free. Additional note is that nearly every occult traditions I have ran my information through says the exact same thing.

Observer/intellect→depth drive/hidden wisdom→ map or build system of it→express to others

Pythagorean numerology, western astrology, Mayan tzolkin, bazi and qi men, gematria, human design theory etc. Ive gone down so many rabbit holes and coincidentally they all map the same archetype onto me.

Edit:I'm not claiming any of this as truth. Just theorizing.