I am not sure what exactly you might have missed in May 2022, but that is the time that /e/OS jumped from v0.23 to v1.0
At the same time /e/OS decided to stop supporting Android pie – and the new builds were Android Q.
Linked from Info about OnePlus 6T - fajita, you will find
This is the path you should probably take now.
Be aware that there are currently quite a range of Android versions showing for fajita
/e/ image ROM – fajita, but /e/OS is moving towards a “latest Android version only” policy as reported in current notices like
-
Week 12, 2023: Development and Testing Updates
- See subsection Important information : Plans to drop support for multiple OS versions on the same device