I sure hope you are right. I have blocked updates on my TV at the moment because each update seems to have been breaking it more and more. I'll be keeping an eye on certain forums for an update, there are communities that are livid at Sony and this TV. All support related emails come back tone deaf as well. I'm definitely going LG next TV, not just the Sony TV not living up to its promises, but the PR and support are dismal in this very sensitive moment. This is going to effect them for years to come with all the bad publicity their TVs are getting when it comes to HDMI 2.1 features. I have no intention on buying a Sony product ever again for wasting my time and money with this TV.
While I do feel Sony should have had all these features ready day one. VRR is about a year late, and even their newer J series of TV's didn't have the updates. Sony's processing tech is by far the best in the industry. Which is why Sony's OLED which use LG panels have a better picture than LG's own TV. Sony just has better processors and software running on said processors.
But unless you bought the X900H early on, it ended up being by far the cheapest worthwhile HDMI 2.1 TV on the market, or just cheap good looking TV in the $1200 range. The latest Firmware has been just fine for me, no bugs or issues. Samsung's lineup for sub $1500 have gotten worse year after year for the last few years, where you can go back a few years from Samsung and actually get a better TV.
LG's non OLED screens are pretty meh, but their OLED's are top of the line. Sadly they are not very bright, they are about as bright as our X900H. Maybe even a little brighter in some situations, but overall for 100% screen brightness it is not impressive. They are nothing like the brightness you get from a higher end Samsung QLED (as the lower end QLED branded models are hardly QLED)
I love Android TV and have used plenty of LG TV's to hate WebOS and the entire LG TV Interface. Sticking a FireTV or a Nvidia Shield would be a must, but man do I hate not being able to use the factory tv remote for everything. The Sony TV interface is great, as it is Google TV.
The Only HDMI 2.1 feature not up to snuff is the VRR. But I have yet to run into a game that would really benefit the use of VRR. PS5 doesn't even have VRR yet.
I will say Black Frame Insertion on the other hand works great. And by far a more worth while feature ATM.