Yes, we are in agreement. My hypothesis is that WotC wants to occlude this reality because it is very much in their interest for the term "5e" (or 5.5e, or 5e2024, etc.) to be meaningless to consumers, so that the only thing that matters to consumers is the term "D&D." Which they own and can control. Which is why they steadfastly refuse to comment on what this upcoming rules revision should be called other than "D&D" or "the 2024 D&D update."
In other words, they want to basically make the engine synonymous with their particular game. So that, for example, the words "5e compatible" no longer have much currency.
I further speculate that this strategy was essentially laid out by them in their original announcement of OneD&D, and is why they have recently expanded DnDBeyond to include selected 3PP.