Realistically speaking, this might be the thinnest "player violence" situation I've seen in the NFL yet. In almost every other scenario I can think of, there is an arrest, or some level of evidence - pictures of an injury, video of an altercation, witness testimony - SOMETHING. This is quite literally just one single person saying "many weeks ago, Diggs hurt me a bit, but it's all healed up by now, I didn't actually get any evidence of the injury and no one was around, and there's no video or photographic evidence of it either, also I want Diggs to pay me some money."
Any person, male or female, could make such a claim about any player in the entire league at any time. I hope the NFL realizes that it would set a very bad precedent to put Diggs on the Commissioner's Exempt List over such a claim, as it may create a bad situation in the future. Imagine a Super Bowl matchup, Bills vs. Seahawks - except uh oh, a random woman says Josh Allen choked her out 5 weeks ago. No evidence though. She happens to be a Seahawks fan but don't worry about that. Sorry Josh, you can't play in the Super Bowl, you're going on the CEL.
You can say a person would not do that as they could be facing charges for falsifying a police report, but at least as far as I am aware I don't think that is pursued all that often. Please let me know if I am wrong there, though. Either way, I hope my point gets across - with no evidence to go off of, it would be unwise for the NFL to punish the player at this time.