Quite the contrary, I'd redo the tests for RED or OPS in a heartbeat. The fact that require potential invitees to put forth a bit of effort to join generally weeds out the people who aren't going to put in the effort to maintain their account or ratio.
Spent maybe 1 hour reading the training material for both sites. Passed OPS first time, RED second. Maintaining a good standing on either will generally be enough to get you into anything else.
I was a denier for a few years too until I just sucked it up and made an attempt. Couldn't pay me enough to switch back now.
This speaks to my soul so much. I started at a non profit 2 years ago and it pains me how much the company spends on Oracle and docker now and no one does anything about it. So much of our infrastructure is built to rely on these things that we can't just do without them when they do crazy shit like this. And Oracle and docker can afford to do this as long as a few cash cows hang on like us. Hostage is the worst and best description.