1. **Purpose of NDAs**: The text correctly identifies that NDAs are typically used to protect intellectual property and company secrets. This is a standard practice in many industries, especially in technology and creative fields.

2. **Punishment for Violating NDAs**: The statement about punishment being related to the financial loss caused by the violation is generally accurate. Legal consequences for breaching an NDA can include damages that are often tied to the financial harm caused by the disclosure.

3. **Abuse of NDAs**: The assertion that using NDAs to cover up criminal offenses or embarrassing incidents is an abuse of their intent is accurate. NDAs are not legally binding if they are used to conceal illegal activities.

4. **NDAs and Criminal Offences**: The text correctly states that NDAs cannot legally prohibit someone from testifying about criminal offenses. In many jurisdictions, such clauses would be considered void as they go against public policy.

5. **Defamation and NDAs**: Defamation is a separate legal concept that deals with false statements harming someone's reputation. The text correctly suggests that defamation is not directly related to NDAs. However, the fear of defamation suits can sometimes reinforce the silence encouraged by NDAs.

6. **Psychological Impact of NDAs**: The anecdote about the individual's reluctance to discuss their work due to an NDA highlights a common psychological impact of these agreements. People often refrain from sharing information, sometimes more out of fear of potential consequences than actual legal restrictions.

7. **Post-Employment Enforcement of NDAs**: The text's claim about the challenges of enforcing NDAs after an employee leaves a company is partially accurate. While it is true that a former employer must prove a breach and its financial impact, this does not mean that NDAs are unenforceable post-employment. The enforceability depends on the specific terms of the NDA and the jurisdiction.

8. **Legal Advice**: The conclusion advising to seek legal counsel is sound. Legal complexities, especially in cases involving potential abuses of NDAs or speaking out against organizations, often require professional legal advice.