To me over the years there always seems an opportunity to buy $AVXL cheaper and that also means cheaper than some institutions taking shares off Anavex have gotten away with.
A Rights Issue might work better going forward if it is for building out the Anavex Org operationally to earn revenue on the back of an approval of A2-73.
Once Anavex is certain of future revenue, borrowing money could still be cheaper than dilutive financing. Probably the current inflationary environment will have changed before Anavex gets that far.