What we need is the option to disable this behavior that you described in your post.

<snip>
"The way a PDF file opens, like its zoom level, layout, or whether the window resizes is usually set by the person who creates the file. These settings are saved inside the PDF itself and control how it appears when opened by others."
</snip>

We do not care how the creator of the file wanted it to appear when opened.

What we want is for the file to open nicely in our window, behave itself and not to trigger the resize and relocate that is hugely disrupting to our workflow.

It needs to be a checkbox option in Acrobats settings.
"IGNORE DOCUMENT VIEWING PROPERTIES"

This is a clip from a community thread.
https://community.adobe.com/t5/acrobat-discussions/completely-fully-disable-100-of-any-and-all-auto-window-resizing-document-rezooming-functions/m-p/15357957/page/3#M510515