Some of the companies whose stock price has been affected the most are making up for the loss by giving more stock. I’d expect Facebook to do the same to retain their talent if the stock drops significantly.
Look at Apple's share count over time if you want to see a buyback not overpowered/diluted by employee equity.
https://www.macrotrends.net/stocks/charts/FB/meta-platforms/...
https://www.macrotrends.net/stocks/charts/aapl/apple/shares-...
It's possible these new rounds of buybacks are far in excess of employee comp though, just saying historically speaking.