MongoDB (MDB) stock just suffered a brutal reality check on Monday. The shares crashed down almost 20% after CEO Chirantan “CJ” Desai stepped down to join Meta Platforms (META) as chief enterprise platform officer. Desai had been in the job for less than a year. The question is whether the leadership shock changes the growth story investors were paying for and whether the current selloff opens a window of buying. Let's try to find out.