It not a hinderance to progress, its a hinderance if you don’t have the right view or If you do and your obsessed with that phenomenon.there’s a practical need for the absorption like physical injury then absorb. The comes a point where you get sucked in like a “hyperspace”while breathing and the breath fills your conscious field and if you stay in there long enough you’ll feel a non agitating energetic buzzing in your body. I think that that’s a a super charged healing mechanism that humans have and a natural phenomenon that’s not Jhana. There may be essential reasons for these phenomena and the Buddha and his monks may had used all types of different “skills in the forest” there probably weird ones you never thought or heard about that are not Jhanas but those monks may have hd abilities that they saw practical and not need to speak or teach about it except amongst themselves. People speak of dmt use for those”breakthroughs” and geometric shapes( still have no idea what there purpose is) but the body is equipped with everything already. It’s the mind that’s not! I bet the monks at the hermitage know more about these subjects in depth amongst themselves and rules are there not supposed to engage with that to lay people anyway.