⚠️spoiler warning (in the comment and my reply)⚠️
Exactly. MC does things outside of normal rationality because of the concept of mental/moral degradation building up and leading towards the E3/E4 branch. There being no option of turning back is due both to time restrictions on my end and wanting to strengthen the concept.
Also, it's less about being a bird, since it's not due to male centrism per se, but rather to MC's loneliness, curiosity, and attachment.
You can 100% have your own opinions; I'm just explaining as a reply. Thank you so much for playing, and for the compliment :) /gen