Are you arguing just that they're not going to happen for IFA, or as it seems that it's not going to happen full stop?
If the latter I disagree with your analysis. They've demo'd 8K 88" and the head of LG display has publicly said they're doing smaller. There are other manufacturers of OLED panels coming online in the near future. Every man + dog in the display world is looking towards 8K, whether it makes any sense at viewing distances or not. LG would be able to sell many, many multiples more 4K 44" sets than 88" 8K sets from their 10.5G tech when it happens; but because talking about smaller 4K 44" sets won't set the world on fire the headlines will all be about monster 8K sets. Looking at well reported trends heading out to 2020 - the average TV size is still going to be something like 46" and I can't see LG ignoring more than half the market for TVs with their tech once they have the ability to make 4K smaller panels.
Everything you're talking about as far as I can see relates to current manufacturing plants for their current 8.5G tech - of course in discussing those plants they're not going to be talking about bigger, higher res or smaller panels as 8.5G OLED tech doesn't actually get there!
Do you have specific links which you think back up LG >not< doing 8K or smaller panels in the future? As I've read in more than one place that they are doing 8K and that they do have plans for smaller panels.
I'm not saying these large 8K or small 4K sets will be announced or shown at IFA though.