In 2019, gimp made it's most recent release. Everyone loved it, but complained about usability. Maintainers, various devs, (plugin authors), the crowd all said "it's open source, we can fix it".
It's unlikely to get "fixed". Everything has quirks. But given how great it is on the whole, I suspect we'll see it continue to grow for another 20 or years, with similar complaints on usability for each release.
In this world of ever-changing everything, it's good to see some stability: gimp is still there, and it's users continue to wish it's usability was better.