Please, learn (not just read) tipitaka in the ancient study system first, before you judge it.

From: https://dhammawheel.com/viewtopic.php?f=13&t=31361&p=461798#p461798

Because you never learn naya in netti-pakaraṇa, never enlighten, and never been a good teacher, so you think like that.

1. If you learned naya in netti-pakaraṇa, you will know why the 1st-saṅgāyanā-saṅgha categorized tipitaka like that. I learned and answer follow to the 1st-saṅgāyanā-saṅgha's thought.You can guess like a historian like the other westerners often do, but because you choose to guess, not learn it as it is, so you will never understand the 1st-saṅgāyanā-saṅgha. Theravāda-tipitaka still keep our ancient learning system,which the historian never try to understand it by study it as it is. So for me, what, the western often do, is distorting tipitaka and commentary like a guesser or a historian. They judge 1st-saṅgāyanā-saṅgha before they understand 1st-saṅgāyanā-saṅgha's thinking. And because the westerner don't know the 1st-saṅgāyanā-saṅgha's thinking, so the westerner often have the reason to cut many part of tipitaka off and distort commentary. Your professors just read through pāli canons, but they never understand what was the categorizer, the 1st-saṅgāyanā-saṅgha, thinking while they categorizing tipitaka. They never try to do, so they still try to cut some part of tipitaka off.
2. If you have enlightened, you will know the enlightening-to person will enlighten by only one effectual characterize. The practitioner must meditate by all 3 characterizes, but while enlightening-to moment, only one effectual characterize is required. This is what in tipitaka called 3 vimokkha, which relate with 3 characterizes. After enlightened, he can practice the other characterize skill to be effectual, too. It is like when you meditate metta to everyone, but you will attain 1st-metta-appanā-jhāna just by a person. But after that, the practitioner can practice metta to the others, then attained sīmasambheda-appanā-mettā-jhāna. I have not attained or enlightened by myself. I just wrote follow to tipitaka and commentary.
3. If you are a good teacher, you must memorized and understood everything you teaching, such as book's contents, each student's habit, each student's future, like a smart economist who can predict the future of world economic. You never be a good teacher, so you can't understand what I wrote follow to commentary, who were tipitaka memorizers.

Please, learn (not just read) tipitaka in the ancient study system first, before you judge it.