I started with a GH4, then 2 GH5 bodies, they worked pretty great, went off to Fuji XT-3 as I was hoping to have one system for both Photo and video. Didn't work out and this was when Lumix had the big FW for G9, so bought 2 G9 and a bunch of lenses, went to GH6 (x2) from there. Ended up selling all my M43 once the S5iix was released, as the future was FF and PDAF, and I'm currently on 2 S5iix bodies and a mess of lenses as I had to buy APS-C for Crop 60P and normal range FF glass, I don't Love the S5IIx but they work fine so I guess I'll keep using them till the pro FF bodies arrive, But when will that be? then the GH7 comes along with PDAF, so do I sell everything and go back to GH7? Or sell everything and go Sony???
This is where Lumix has left me personally.
Looking back, I can say that my GH5s and G9s just worked for what I did and served me very well. GH6 and beyond just don't have the same Mojo for me personally!