I would wait until the M3 Air is announced then get a M2 Air at a discounted price. For the majority of users the performance gain the M3 will offer will not be noticeable. That spreadsheet calculating in 0.003 seconds instead of 0.004 seconds is not going to be a big deal.
What is unknown, and that would blow my assertion out of the water, is if Apple upgrades the base memory, improves the screen, and improves the black coating to minimize fingerprints.