Something stated periodically, and certainly in these comments, is how the license upset Redis OSS contributors. I understand there are many perspectives on the story, but this is generalized projection to support a viewpoint.
Speaking just for myself as an Redis OSS contributor -- a very very minor one but I've spent hundreds of hours dedicated to Redis dev over the decade -- I wasn't bothered by it with respect to my donated time or IP. Beyond that, my opinion is that license holders have the right to do as the licenses permit, including changing it.
Without a survey, we don't know about the rest of the contributors and do we somehow weight their approval by the extent of their contribution? In the end, these opinions don't matter directly and what matters is the actions individuals and organizations take, which KV store they chose to support with time or money.
Clearly some contributors and their backers didn't like the change and forked Valkey. I have since started collaborating with Valkey. But as antirez pointed out how it would go, it's because of technical grounds, not because of license angst. Valkey was open to rejiggering its Lua integration, something Redis wasn't open to previously; so I took the opportunity to advance that with Valkey.
As Redis becomes useful to me again, e.g. with this Vector API, I would collaborate there too. We can have different tools for different purposes. Either way, it will be interesting to see how these two codebases advance...