Fascinating - why does a strongly worded letter from a 2% shareholder prompt layoffs and major changes within hours? Like if the board believes they are doing O

Fascinating - why does a strongly worded letter from a 2% shareholder prompt layoffs and major changes within hours? Like if the board believes they are doing OK, or that perhaps it will take a longer time for their current plan to payoff and reflect in revenues, can they not communicate that and continue? 2% isn't enough to force any decision.