Once some ideas are too 'dangerous' or too contentions to be discussed, there is little hope of ever moving forward in solving the very real problems we have in this world.
Characterizing values as fragile things which cannot withstand the rigors of robust debate is also a troubling viewpoint.
edit: typo.
...then go write another political policy blog post about how a board member's politics aren't representative of a company's mission, etc, rinse, repeat.