If u change the trend line to and order 2 or 3 polynomial it might take into account better the slow down queue advancement. I'm not claiming slow down in production but those in the queue still are less likely to cancel now compared to early on. In other words, if you are still here you are probably stubbornOverclockers.co.uk: Queue Position of Asus GeForce RTX 3080 TUF Gaming 10GB GDDR6X PCI-Express Graphics Card
I've added a new cell-field in the source spreadsheet call "Production Lag" which is the difference in days between the estimated delivery date (blue line reaching zero) vs. the queue position delta (red line reaching zero). Current the lag is 65 days, or in other words until the red and blues meet, the blue trend line ending at a estimated "2021-06-04" is meaningless.
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Source: https://docs.google.com/spreadsheets/d/1fQ7GlVhIP_YNjFJQYFvE5a-6H1Ywnw7aacjRfLNn_tE/edit?usp=sharing