I'm not sure I understand why you think a 3090 Super would annoy current 3090 owners although I may be missing something. You are suggesting that people "thought" they got the cream of the crop although wasn't that true, and still is? I've never bought a GPU expecting it to retain top position for more than a year anyway, and also can't think of many who would. There's nothing to be annoyed about by a better card being released over a year later. This is more about value than having the top card.
I personally won't be annoyed as I paid £1399 for a 3090FE last year and have been happily gaming on it since then without having to live by stock updates or contend with the annoyance of looking at an incomplete new build in the corner. That alone was worth the price difference over a virtually non-existent 3080 although it's also come into its own for FS2020 in VR. If a card marginally beats this one but comes in at £2000 over a year later I won't, in the least bit, be annoyed. What I would have been annoyed with was deciding to hold out for 3080ti only to struggle to get one and then pay more for a very similar but, nonetheless, lower spec card months down the line. A 3090 in the hand is worth more than 2 3080's in the bush.
Again, I may be missing something though.