Don't tie Patty hands behind her back. Now she has to wipe everybody minds, so they can forget WW was beating bad guys up in a public mall, running down the street in the nation capital, in the middle of riots. Yeah, lets wipe everybody minds, just to stay true to a dceu that's on life support.
I don't think Patty would do it to connect or disconnect from the DCEU, and I feel like it's equally prescriptive to suggest that Patty should disconnect as some sort of dramatic rebuke of the previous films when we have no idea how much she cares about all that drama or how much she dislikes what those previous films did. More importantly, any reversal doesn't limit the narrative or make anything pointless any more than it did in
Superman 2 when Superman's intimacy with Lois and his power loss were all reversed to restore the status quo by the film's end. There was a similar premise in the
Smallville episode "Infamous" where Clark goes public only to use a Legion ring to undo it. Patty has spoken on several occasions about how she found the 1980's setting appealing because it spoke to the idea of going to extremes, the price to be paid for doing so, and the ephemeral nature of it all.
Characters can learn lessons, and audiences can appreciate a journey, when the growth is largely internal to the character. I think it would provide an excellent context for what we've already seen from present day Diana, and would provide a strong foundation for a closing film in the trilogy to focus on what it means to be public for real including a focus on Diana embracing a role as an ambassador for the Amazons and finally letting her return home to Themyscira having reconciled her two worlds in the classic monomythic sense.
Nobody saying they should disregard WW, they should disregard BVS and JL and the whole walking away from mankind deal, which they seem to be doing.
It doesn't at the moment, because we've seen Diana in set pics from
WW84 walking around in civilian clothes with no disguise yet not being recognized. So, at least for some portion of the film, it's unlikely that she would be a publicly well-known superhero. Then there's the chance that any public sightings will be reversed or explained away. We can't know for sure. What we do know is that even in her alleged "walked away" state in BvS, Diana still got involved in stopping Doomsday. That suggests that what her comments to Bruce at the end of the film meant was that she never stopped helping people or being a hero, just that she did so as a solo hero who didn't cooperate with anyone or seek the spotlight.
As for the sequel question. I thought Patty was pretty clear when she spoke about this at SDCC:
I never want to do more of anything for the wrong reason. I don’t even want to go to that place in my head of how you keep it going and cash in. The thing that mattered to me the most is I wanted to make great movies in my lifetime. And I found myself saying I have these characters I love and this world that I love and we can make a movie about something completely new, pure and strong and as unique as the first one. Of course, I want to do that.
The purpose of all of the "not a sequel" comments isn't to communicate that
WW84 will disregard continuity, but to inform people that the film isn't a direct follow up like
Chamber of Secrets was to the
Sorcerer's Stone; fans of the first won't get to see Etta, Chief, and Sameer or see how Diana grieved Steve and found her way in Man's World on her own during the early twentieth century. It's also to say that it's not going to repeat a formula for easy consumption and success. It's not like the next episode of a TV series. It can be a stand alone and new story while still being connected to what's come before. Then, maybe it won't be. But, I don't believe it's been definitively established yet, and until then the possibility of connection still exists.