About 50/50 around here too.
It's the "zealous" ones who show up at the KH. Zoom is filled with the elderly, the fence-sitters, and parents with young kids (after 2 years, the prospect of getting all the kids dressed up, then shlepping them to the hall, then fighting to keep them quiet for 2 hours must seem excruciatingly daunting). It also seems to have more than a fair share of folks who just don't feel like going in person, and now there is an easy alternative.
I'm pretty confident that the GB was hoping for an immediate in-person return of 90% or more of the JWs, with Zoom populated solely by the old & the sick. I'm equally confident that the 50/50 split being widely reported is quite disappointing for them. I'm expecting, any day now, the start of video and shepherding visit harassment on the importance of being at the KH in person.