There was an early culture with DIR from a fellow named George Irvine that was ... well ... not particularly friendly. Google him and you'll see what I mean.
GUE (and the other two DIR agencies) have quality training and high performance requirements that must be met for earning certification. There is some resentment from people who expect a card after a class. That's not how GUE works. If you understand their philosophy which includes, but is not limited to, establishing a set of processes that is consistent from recreational diving to extreme cave penetrations/deep technical dives. An example of this is that in the GUE system, they do not dive air. For shallow (100 feet or less), they dive EAN32. Deeper than that, trimix. And admittedly, I used to think that was ridiculous, but then I learned about gas density issues at depth, and GUE preceded the science with that practice. Now we all know that we always measure our O2 content with nitrox. Same with technical diving. You always measure all of your cylinder percentages. There are no split fins or jacket style BCDs in GUE. Some people resent this. Again, this is for the philosophy of team based diving where everyone is intimately familiar with configuration of everyone else. There are standard gasses for different dives that simplifies logistics. You always match, so your deco schedules match (trust me on this one, not using standard gasses was a real cluster in my first real technical dive to 180 feet).
Their mindset is equipment and processes for "extreme" diving. When one realizes that, everything they do makes absolute sense.
Just not everyone realizes it, hence some people are averse to GUE. This is not GUE's fault, but their own.
You will find the GUE Seattle community to be a really great group of folks, even if you don't want to dive their system. Except for this guy named Doug. Watch out for him. Right
@OrcasC205?