Thank you for that link! I've installed 3.0.0-RC3 and so far I'm pleased. I've noticed a few new behaviors like moving multiple layers now with shift instead of the previous layer link.
3.0 felt a little weird for the first day or two, but as someone who likewise has used Gimp mostly for web stuff for (almost) 20 years, I really like 3.0 compared to 2.x so far. Text is slightly more finicky but way more powerful, for instance.