Not sure how you've figured that the game getting delayed on multiple platforms 2 months before launch is a "good sign for the industry".
All it proves is that studio was not truly prepared to get this running well on last gen but doesn't want to give up those sales. Now, current gen version will release and be reviewed (from what we've seen so far probably quite well) and that review score will carry forward to last gen copies. So if it gets a 8 or 9, regardless of if its a buggy mess on last gen (which is likely considering the delay) the game will still be labeled as an 8 or 9 because when ppl talk about the game they will mostly refer to current gen version.
It's a strong marketing strategy and further enables the greed of this industry(which has become quite obscene over the years). Not what I'd call a good sign. But fair play for looking on the brightside OP
The willingness to delay the game on old gen, instead of just providing new gen review copies and releasing same day, is a good sign IMO. They could easily manipulate the previews and reviews with limits on what they show just to sell tons of copies of unfinished ports, but have chosen not to. That is good.
With respect to people assuming old gen will be worth the same review scores as new gen, well, if that happens it will be the fault of critics and consumers and no one else. But it wouldn't be different if they kept the old gen launch date the same, so I don't understand why you think the pub is being nefarious here at all.
Fess up - are you just salty because you haven't gotten a Series or PS5 yet? It's the only explanation that makes sense to me. I ask this because I think the only solution from your perspective would be delaying all versions to the same date. Based on a subsequent post you don't seem to be in the drop last gen camp.