Mac’s and macOS (all the way back to 1985 and ‘System 1’) has never had the concept of maximising windows. What you are referring to too, and what the green but

Mac’s and macOS (all the way back to 1985 and ‘System 1’) has never had the concept of maximising windows. What you are referring to too, and what the green button does, is makes the current window (not necessarily app) full screen. All this predates the behaviours described that are followed by Windows and other OSS desktops. Neither is better, both depend on habit and familiarity. For some of us that used Mac’s since the 80’s, the Windows approach is a complete anathema. Organising the workspace into neat grids is not something many of need or have missed - that’s not to say that it’s pointless, but it doesn’t necessarily fit the workflow of macOS. As mentioned, there are myriad tools, most of them free, to add the behaviours that you seek.