I'm reluctant to assert that HRT and legal name change are an absolute requirement for living full time, because both are subject to different jurisdictional requirements and ease of access varies by economic status. HRT can also be inappropriate depending on medical conditions. I'm also baffled by the ease with which people toss around the phrase "legal gender" because as far as I can determine there is no such thing. There are well-established processes by which a judge can order a name change, but gender tends to be more of a document-by-document basis with differing requirements in each case.
Of course the term RLE often means something fairly specific in terms of access to procedures like GCS. Given that a patient will have to take some kind of hormone replacement following GCS it makes a ton of sense to require significant experience prior. That said, I lived full time for two years before I started HRT because I wanted to be absolutely certain I knew what I was doing and wasn't making medical decisions because they were on some arbitrary checklist. I wanted to make them for me, in consultation with my wife, on my own time.
Awww, thanks! I thought it was long past time to change my avatar, and my bass demanded to be part of the process.