I think labels care more about total sales than chart placement. She is going to sell the same amount, just in different weeks. With vinyl shipping a week later they are also securing a good second week.
I think she can easily outsell Elton just with CDs, streaming and digital sales tho, the problem are older albums that are still going strong in the top 5.
Also I don't think Lana disappearing from social media will have that much of a negative impact on sales. People that want to listen to it will regardless of Lana reminding them the album is coming or not. She doesn't do that much promo herself anyway. She would just post a link and that's it