There are any number of online help forums for Windows and for MacOS users. This site having Android in its title should be an obvious tip-off it's an Android help forum so references to Windows or Mac computers will be incidental. When you have specific queries about Windows or MacOS you'll get more relevant and pertinent feedback using sites focus on one or the other OS.
In many cases references to computers are because members have questions about how to transfer media content from their phones to their computer HDD or how to update their Android device using a computer (i.e. Odin).