lying and owl from my POV, whilst telling why we don't use anklets and jesses on our birds anymore.

Anklets and jesses have been used in falconry for 100's and 100's of years BUT just because its been done that way in tradition for many years doesn't mean there isnt a better and nicer way to look after and treat the animals under care to give them the best life possible.
When working with animals we should always strive to be better for them and find better ways to help them live more enriched, healthier lives.