I think to accept that life means suffering might take away potential to improve perspective on whether it’s actually suffering I need to accept, or pain I can mitigate. The distinction is crucial and getting it wrong is - IMO - a big contributor to anxiety & depression (they usually coincide from a clinical perspective). It has been shown in rats that they will reproducibly get anxious and depressed when they feel trapped and isolated, and this resolves when their situation improves. So if someone is not being held prison at the moment, it would IMO be beneficial to find out whether there’s a „prison in the head“.

That’s besides the other factors I mentioned - if you look at studies of what substances pathogens in the stomach and microbiome produce, it turns out they can really cause anxiety. My take is that anxiety can be a multifactorial issue and a local minimum that one needs to climb out of actively. Accepting life as suffering might not give the impulse to get the necessary help.