Is it fair to say that approximately 420271729.51 * 0.07 = 29419021 STEEM will be "printed" during 2022? (80,600 STEEM/day)

That's a decent estimate, but it's more complicated than that. And as I think about it, I guess I don't even completely understand all of the relevant factors. Some of the variables that come to mind include these:

• It's compounded countinuously, and the rate decreases every 250k blocks (~8.7 days). It's 6.99 percent now, but it was 7.41% a year ago and it'll be 6.57% a year from now.
• Conversion from SBD to STEEM increases current supply and removes collateralized STEEM.
• If we switch back to SBD printing for author rewards, I guess the current_supply growth will slow but virtual_supply will continue (as collateralized STEEM).