Hi y not,
I agree with you that it is better to focus on the task. I only want to share with you that what i said is not Mahāyāna only, it was also the experience of, for example, theravada thai forest master venerable Maha Boowa. He was considered to be an arahant. In a book called arahattamagga, arhattaphala, the path to arahatship, (you can find this on the internet) his experiences can be read. A fragment to give an impression (page 31):
“I saw with unequivocal clarity that the essential knowing nature of the citta could never possibly be annihilated. Even if everything else were completely destroyed, the citta would remain wholly unaffected. I realized this truth with absolute clarity the moment when the citta’s knowing essence stood alone on its own, completely uninvolved with anything whatsoever. There was only that knowing presence standing out prominently, awesome in its splendor. The citta lets go of the body, feeling, memory, thought and consciousness and enters a pure stillness of its very own, with absolutely no connection to the khandhas. In that moment, the five khandhas do not function in any way at all in relation to the citta. In other words, the citta and the khandhas exist independently because they have been completely cut off from one another due to the persistent efforts of meditation” (venerable Maha Boowa)
Siebe