So why exactly did SE feel like the delubrum savage entry system was bad. In the live letter translations I am reading something about not wanting to railroad people or give them as much support and for groups to form "organically".

The thing that is railroading people into organizing on discord is the raid itself being very strict and unforgiving, not the method of entry. I realize I'm asking a "what where they thinking" question when they clearly have not put any thought into this but I feel like the question needs to be asked regardless.