I don't know if it's a shame. I love using Redux today, much more than when it was the 'current thing', when you couldn't go on any front end forum without reading the same tedious debates and criticisms over and over. For those who like the Redux approach, and don't mind the trade-offs, I'd argue there's never been a better time to use it. Front-end is huge, so even now that most people have moved away from it, it's still got a relatively big community, i.e. doesn't feel like it's going anywhere, and it's now very mature, well documented, and more 'standardised' by Redux Toolkit.

After a couple of decades programming I've come to think the size/status of something like Redux is today (mature, stable, moderate size community of long-term users who are focused on actually building things with it) is the perfect kind of project to depend on. Projects that have survived the hype cycle are what you want, not projects that are currently in the eye of the storm. The fact that it seems like yesterday's thing is good, it puts off exactly the right kind of people.