Not sure what "solving" means but it's not correct that Pipewire doesn't offer any benefits unless you use another API. Depending on what you compare it with, of course. If you use audio semi-professionally you might already use low latency software and not see better latency, but compared to Pulseaudio the difference should be noticeable.

Of course, if the application is VoIP than Pulseaudio was already good enough, as network latency is an order of magnitude greater, but for realtime streaming applications the difference is there.

Most end users won't care however. They switch when the distribution they use switches over.