I don't agree with the claims of a complicated menu system and difficulty to use the Sony's. I came from Canon (not as a fanboy) and struggled through adapting to the Olympus and Panasonic M43 systems. What struck me was that both had pluses and minuses going for them in regards to my individual use needs for both video and photo capture. I do agree that this effort from Sony, if true is overpriced already and possibly only makes sense for the vlogger and those just starting out with video making.
Moving on to Sony has been less confusing for me as an individual than making a move to Nikon and that was a decision I thought long and hard over at the end of last year as I only had a finite amount of money from some recent work to throw at my move away from the GH5 for video and to get myself a fullframe sensor body again for photography! The Nikon system and physical layouts didn't feel natural to me; they have some great image making gear, but it's not the right fit for me personally. It doesn't mean I have a need to go bagging them as a brand though.
This as a choice by Sony does perplex me a little, I have my already compact a6500 as my main video capture device, very rarely ever needing to use the a7III with an Atomos external recorder for better quality video to be edited by a professional production house. Personally, I still prefer to use my original HD (1920x1080 px) Blackmagic Pocket Cinema Camera when possible, as I can expand that up to 4K and you would never know!
Having said that, I am one of the rarer media capture people that doesn't get bogged down in the minutia of technical detail and is rather much more interested in the fine art of storytelling through visual mediums. Not that the images I share on the POTD thread necessarily elucidate that in the best light all the time! 😉
I still have my Oly E-M5 Mk II and will keep it for my light-painting captures with the Live capture modes being outstanding in this regard for their ability to only add new light to the base exposure. As much as certain people like to bag Oly, they were innovators when nobody else was!
Is M43 dead through this move by Sony? Nah, not in my eyes, yet. Especially as probably well over 85% of camera owners have never seriously printed any of their works, they are never going to notice the difference under normal digital viewing conditions, so for the majority it makes no sense to pay more for slightly more. There will always be those that feel to be better tog's they need better gear and there will of course be those that just have the spare do$h laying about to buy such things on a whim. Good luck to them! 😉
For me, it's not going to affect any choices I make in regards to potential future use gear. I'm all in on the Sony E and FE lens lines as well as the M43 lenses for my BMPCC. Apart from one more FF lens, I am all set as it is. I may be tempted to get a telephoto at some stage in the future too, but probably not actually, I'd rather another piece of Cine glass!