It is a power struggle, and nobody's going to come out of it looking good.
Essentially from what I can gather here, in Cliff's Notes version, USADA wanted the Chinese swimmers banned, CHINADA said they accepted the tainted meat argument and exonerated them and WADA accepted it. USADA didn't like that and pressured WADA to investigate further, and so USADA decided they wanted to take it into their own hands and intervene outside their jurisdiction to force WADA to act how they wanted them to.
Meanwhile, USADA were busy clearing Erriyon Knighton based on the same argument they were considering unsatisfactory for non-Americans.
Reuters somehow got hold of this info about how USADA had been allowing athletes who failed tests to continue to compete under the auspices of informing against other bigger name dopers (coincidentally, what big name Americans have been caught doping lately? Come to think about it, what big names period?), not informing WADA, and enabling those athletes to continue to compete unencumbered. WADA found out about this practice in 2021, and USADA were able to convince them that it would be detrimental to the athletes' safety to sanction them retrospectively, so they remain anonymous (although a couple of names have been bandied about, I haven't seen anything compelling to tie any individual down to the allegations myself).
Obviously publishing this makes WADA look bad as they have allowed USADA to break their code - the same thing they were busy banning the Russians from the Olympics for, under heavy pressure from USADA of course - without sanction, so WADA came out swinging with their own story of it, highlighting USADA's complicity with covering up positive tests and not informing WADA of doping infractions in order that high profile American sportsmen avoid sanction, to which USADA have largely hit back with a very generic "USADA take the fight for integrity in the sport very seriously" type comment while an army of bots and plants on social media fight a deflection campaign trying to steer all controversy back to China and characterise all questions or challenges to the USADA position as being the work of Chinese propaganda - served with amounts of whataboutism that Russian apologists would struggle to match.
Which CHINADA have played right into the hands of, by coming forward to demand a more thorough testing of US athletes and an investigation into the practices of USADA in order to protect the integrity of competition, fomenting further division.
For me it's a, why can't it be both? situation. After all, the Chinese swimmers probably were doping. The US probably has been hiding positives and refusing to play by anti-doping rules and trying to bully WADA into serving its own aims for political purposes - after all it worked against the Ostbloc in the 80s, why wouldn't it work today? - and WADA is also weak and hypocritical and has allowed USADA to dictate to it in the past, as shown by the fact that even in their statement clarifying how USADA broke the WADA code, they do not suggest any sanctions against USADA or name the athletes involved.
All it does is really highlight that all of these anti-doping authorities are too busy locked in a battle with each other to actually serve the integrity of sport, and so the only positives that we will see for the foreseeable are likely to be either the result of third parties getting involved, like police raids and so on, or they're going to be politically motivated or targeted hits taken out on athletes less because of the athlete and more to get one over on rival ADAs.
Edit: let's also note Hajo Seppelt jumping in and torching his reputation as badly as David Walsh by going full Tygart apologist.