That's false. In the US, that's just a scare tactic from exploitative employers. In the EU/UK it's certainly illegal to prohibit workers from discussing their salaries. Not sure about the rest of the world.
"The contractor will not discharge or in any other manner discriminate against any employee or applicant for employment because such employee or applicant has inquired about, discussed, or disclosed the compensation of the employee or applicant or another employee or applicant. This provision shall not apply to instances in which an employee who has access to the compensation information of other employees or applicants as a part of such employee's essential job functions discloses the compensation of such other employees or applicants to individuals who do not otherwise have access to such information, unless such disclosure is in response to a formal complaint or charge, in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or is consistent with the contractor's legal duty to furnish information."
Source: Executive Order - Non-Retaliation for Disclosure of Compensation Information
Congress enacted the National Labor Relations Act ("NLRA") in 1935 to protect the rights of employees and employers, to encourage collective bargaining, and to curtail certain private sector labor and management practices, which can harm the general welfare of workers, businesses and the U.S. economy.
Intel has failed to focus on the right things in the past decade. TSMC and Samsung stayed focused solely on the technology, i.e. getting the EUV work. Intel was at that time fighting hard to become a more diverse company (under Krzanich). By getting as many exploitable H1Bs into the US as possible, while and at the same time, doing as much outsourcing as possible into East Asian countries where the cost of labour is much lower and so is the quality of work. Infighting within the company, between manufacturing and R&D, and also between US and Israeli-based teams definitely didn't help.
Intel is a struggling from organizational point of view, because it's way too fragmented, lacking a common vision and everyone is fighting for themselves. Intel was supposedly trying to get much higher transistor density, while TSMC and Samsung are fine with a much lower density. This clearly shows that there was a way to get the new node done, but Intel failed to do so, because of their own inability to compete with better organized companies. Now both TSMC and Samsung already have high volume manufacturing (HVM) going for their sub-7nm EUV nodes and Intel is still way behind.
FORTH IF HONK THEN