What changed the tide was
1. WCW announcing the WWF results and Mankind Title Win
Had absolutely ZERO to do with anything. Nobody gave a fuck except WWE fanbois who will parrot whatever propaganda comes out of Vince's ass.
2. The WWF having a better visual product and Edgier product
The hell they did. Nitro looked better all the way up till the very end, and it still looks better than WWE does today.
3. WCW having no direction in regards to story lines (The NWO never ended).
Bad booking did play a large role, but wasn't what killed it.
4. WCW passing on developing new stars and instead focusing on Old Guys from the WWE. (WCW developed - DDP, Giant, and Goldberg) while the WWF had Austin, Rock, Mandkind, HHH, Angle, and Vince McMahon.
Utter bullshit. The cruiserweight division produced WWE's future of the 2000s decade after Vince raided the talent. Most of what drove WWE from 2001 to 2005 was WCW developed wrestlers which includes Steve Austin, Mankind, and HHH. Oh, and funny you criticize WCW for "old guys" over young guys then list old ass Vince McMahon as one of WWE's positives. LOL.
5. The Fingerpoke of Doom was a microcosom of everything that was wrong with WCW, while it devalued the title and didn't make much sense it wasn't the reason for WCW losing the ratings war.
No it didn't. Once again this is nothing but the parroting of propaganda while totally ignoring the fact that HBK & HHH had done the equivalent of the Finger Poke of Doom with the Euro title. They get a pass from the WWE fanbois who then hypocritically cite Hogan and Nash doing it as some sort of Doomsday for WCW.
Jamie Kellner killed WCW. Bottom line. None of that other shit really mattered except in TV ratings, but every wrestling company goes through ups and downs with the ratings.