My expectations (until they cancelled the Plaid+) were also 2022 delivery, but for a fairly different product, based on 4680 cells so much longer range and handling, possibly faster charging and lighter overall. Which is the main reason I originally declined converting down to Plaid when Tesla called me in late-May.
Instead, shortly after Elon cancelled the Plaid+ in early June, Tesla auto-converted us to an inferior (while still fantastic, of course) product that started shipping in Q2 2021, a full year ahead of the mid-2022 delivery timeframe for the Plaid+.
So while I command your positive and glass-half-full attitude, I see no reason for Tesla to delay 2020 orders for the Plaid to 2022, especially since much more recent orders for the Plaid are getting deliveries now.