While the latest version certainly would be better in this regard by definition, please note that Android 11 (R) didn’t get any security updates anymore since after the February security patches. It’s end-of-life, a dead end.
You can first watch what will come of this …
… and if this doesn’t result in continued security update support (not getting my hopes up), then you should seriously consider migrating to this here if you want to continue to use your Fairphone 2.
The current instructions are matching the contents of the current install files. No TWRP needed.