Hey @aware, Welcome to the forums!
Those two posts relate to the older, Local Classic version that was built on Docker. Newer versions of Local (5.x+) will create the WordPress sites directly on the Host computer, so you aren’t actually “connecting over ssh”.
Right now, Local can’t automatically import a Multisite into Local, but in terms of getting you to a place where you can use your site, the general workflow I recommend would look something like what’s described later in that thread:
So basically:
- Create a new, plain Multisite in Local
- Manually extract the site backup, and import it into the newly created site
- Update the various domains within the database