"Stock value" is not real value.
The company's real worth comes from how much money it makes from sales, not from what the "market" predicts it will perform with some sort of gambling.
It's not seen that way when a company's own statements can have a direct impact on the "odds" and the fact that such statements can result in financial gain for the company (via investments). This isn't child's play.
Being Polish I agree with you 100% Working in Polish corpos, good times:
Unfortunately it happens far too often with companies that experience exponential growth and don't adapt their structure and policies accordingly. There should be a legal and PR team that take command of these calls to the extent that all questions are anticipated and all answers are pre-rehearsed.