No, I actually think they should aim to be either as balanced as possible (where every viewpoint gets a seat at the table for healthy debate) in the "soft sciences" & humanities, and as values-neutral as possible in the hard sciences.
There's been a noticeable shift on that between 1994 and present day.
View attachment 373972
And mind you, this was all pre-Trump in this chart. (because I've heard the rationale given that Academia has become more galvanized in progressivism as a response to Trump)
This big shift happened over the time period where Republicans were pretty vanilla. (Bob Dole, John McCain, and Mitt Romney were all about as provocative as a peanut butter and jelly sandwich on white bread)
If both political viewpoints were getting equal time and equal access to the proverbial "town square", I would expect the results to look more like the 1994 results, and not like the 2015 results.