How many times do I have to say that Sony behaved badly on the a7siii and I agree with you on their bad behavior for you to understand I am not defending Sony. Read my posts again.
My point is if you need the added features of the fx3 then trade up. That you do not do that reveals you are just blowing hot air, because you are unwiiling to buy those features. Two days work, or less, for the difference between the a7siii trade-in-value and a new fx3?
Sony misbehaved. You have an option if you need the new features, but it will cost. The fs7 does not have those features either.
For a casual camera person, the trade up is a big cost for a hobby. But for a real pro making a living from video prowess, it seems to me ludicrous to just whine if one actually needs the new features.
I don't call into question your right to whine, or the useful techical info you provide, just your credibility about how important you claim these added features are to you.