Right, but immediacy is already solved. The streaming side is solved by platforms already, and the translation side is solved by having a sweatshop of translators and maybe eventually algorithms to help, too. We've had immediacy for some time now, already.
Moving on, I don't think you will see changes prominently on anichart or MAL anytime soon; the point is that it's gradual and more subtle than that. Crunchyroll was already involved with 60 productions apparently. Conceptually, in a hypothetical "worst case", they could have been influencing artistic choices for each of those programs. We do know they did one: High Guardian Spice is a particularly explicit example of an anime deliberately constructed to western progressive specifications. A lot of people are rather unkind about it, but that's really immaterial; what it really is is a clumsy first attempt at end-to-end control of the anime pipeline from script, to production, to distribution. They didn't find a winning formula with it, but they'll keep trying because there's too much money on the table.
So, I do think that this change in tone is imminently about to happen. Weatern values have already been injected in other forms in localized content too, e.g. in our uptightness about certain types of expressions of sexuality (e.g. that which is perceived to be pervy; e.g, the infilling of "boob-windows" and covering of midriffs in localized games), and with activist translators who deliberately whitewash phrases they find problematic and also who select progressive translation choices over neutral ones.
The bottom line to me is that the money men have zero interest in the integrity of the mediums in which they dabble. As you note, there's precedent; in the 90's, it was 4kids dubs which routinely butchered shows, sometimes extremely. The nature of the interference will change with the standards of the day, but the fundamentals don't.