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I'm not super convinced by the water jet. It can make a mess, it requires a lot of paper to dry if you don't want to wet your pants and if you don't have soap, are you really cleaning?
Heating seat feels like overabundance (a common thing in Japan).
But the sink to clean your hands and reuse this gray water for the next flush is amazing. I think it should be made mandatory in every region with water resources issues. It's still not clear to me, however, if using soap there will cause more maintenance issues or not.
Coincidentally enough, the first time I encountered thus kind of toilet was in a Hausmann flat in the Latin Quarter of Paris in late winter 2022! That made me kind of assume that these were ubiquitous to Paris because I didn't encounter them in Germany or Belgium or Eastern France.
Now I know that was a conscious choice that the flat owner made!