Damn, I was hoping it was pre the AGPL cut-over, especially in light of juicefs's Apache 2
You may want to specify reasons for wanting a “free as in beer” license, otherwise it just sounds greedy. (Not a swipe at you; I’ve fallen into this trap more than once.)
We have to do better to support open source with money. GitHub likes don’t pay the bills. AGPL is fine.
Yes, JuiceFS uses the Apache 2 fork [1] directly (master branch), but also provide a full featured S3 gateway (gateway branch) under AGPL for people' choice.