Go to the download page: https://www.gimp.org/downloads/ - A mac user has FOUR equal priority download buttons to decide between, depending on chips and whether you want direct or torrent downloads. That is an absurd decision to put in front of 99% of computer users.
For power users, no problem. But if the objective was ever to be mainstream, this is among the reasons why it isn't. There is just not enough focus on making it easy.