No, it’s turned off. To clarify, my issue is only with switching between .md Obsidian notes. That feature request I linked to does involve other file extensions.
This post is to ask the community if anyone else feels like Quick Switcher results are less useful than they used to be.
If it’s just me, then I’ll make a feature request to take ‘last modified date’ and/or ‘last opened date’ into account when sorting results.