It has been years since Opera GX launched profiles and nowhere in any of information about profiles being added to Opera GX is it mentioned that this feature is not available for mac. The feature still hasn't been added and it's a feature that I honestly can't really figure out why its missing. At the very least I feel like there should be some disclaimer on the website that this feature is just completely missing from the mac version. I think Opera GX is great and it's my main browser on my Windows machine but until they add this frankly simple feature to mac I'll have to stick to Chrome