I think Morrison and Moore have both gotten criticism for such things numerous times, especially Moore who has a tendency to work in "black comedy rape" into a lot of his scripts. Other creators like Frank Miller and Bruce Timm are not strangers to this either.
Diana, Hippolyta and the Amazons would all wield swords in the Golden Age, so I don't think Marston ever had an issue with women wielding swords. But as the WW franchise addresses war as an outgrowth of ideas of toxic masculinity, the ultimate embodiment of feminine power using other tools than traditional war-time weapons can make sense (even if WW and the Amazons are practical enough to not disregard swords all the time). Jimenez's interview for Historia and the Valkyries in the current run made the point that Ares is the embodiment of toxic masculinity, and the Amazons and women engage in war mostly for self defense because it's something forced upon them in a world men (or specifically entitled men in positions of power) are shaping. So Diana is a powerhouse that embodies femininity that eschews the typical tools created specifically for war and bloodshed. She's more powerful than the symbols she stands against, or is meant to be. So her using a sword, especially in the way DC and poorer writers market her as using it in aggressive ways to hack up foes and show no mercy and be a hardened "badass" doesn't really fit the character and I'd rather they retire the sword and edged weapons entirely for a little bit.
I also don't like comparing her to Xena. Because Xena is more well rounded than the hacking and slashing idiot DC passes for Wonder Woman at times. Even so, I love Xena and I love Wonder Woman, but I do not view them as the same character and what works for one will not necessarily work for the other.