It wasn’t for me. Left a whole bunch of stuff out. There’s an open issue about it on the tracker too.
StrongBox runs locally (it tries to connect to some bullshit service at the start but I didn’t let it) and it did an impressive job. I’m fine with using them as long as I’m not being used ;)
(Glad to hear KeePassXC worked for you, though. It’s important, whatever yo use, to go through the import and ensure you have everything you need.)