I see from other posts that you do not study Judo, nor much BJJ.
This shows in the fact that you downplay the role of kUzushi in ne waza. BTW, ne waza is a subset of katame waza. Ne waza is katame waza applied while basically supine (more or less) on the ground. Katame Waza includes osaekomi waza (immobilizations), kansetsu waza (joint techniques), and shime waza (strangling/choking), whether applied standing or supine (ne waza).
Kuzushi is just as critical in ne waza, since that is the topic, as in nage waza, or throwing techniques. This is obvious when watching a ne waza expert, be she doing Judo or BJJ. As are debana, tsukuri, and kake.
K. Kashiwazaki addresses the question of Kano's POV on ne waza in his book "Osaekomi". To paraphrase, Kano noted that many judo shiai were turning into ground fighting only matches. He did not want Judo to turn merely into a form of ground wrestling, for both practical and philosophical reasons.
He recognized the need for ne waza in Judo. Also, he noted that the KOSEN ne waza experts were part of the Kodokan, and did practice and do nage waza (ippon via throwing was/is valid under KOSEN rules. So he did not want to do away with ne waza. Thus the rule changes in kodokan Judo that required skillfull entry into ne waza, not just walking out onto the tatami and sitting down on the mat , which was apparently OK under KOSEN rules at the time.
So, according to Kashiwazaki, it looks to me like Kano split the difference. The KOSEN schools continued to have there specialized shiai under the KOSEN rules. But "regular" Kodokan rules were changed to prohibit non-skillful entry to ne waza (and let's not debate what is or is not a "skillfull" entry to ne waza, please). This was done to assure that nage waza would continue to be used in shiai. Not because Kano didn't like ne waza or think it was of no use.