I agree. The only caveat I'd put is if you're there specifically for the purpose of entering into the world of politics for one reason or another. At that point, keeping your political leanings a secret would be pretty much impossible anyway, unless you never spoke in classes and didn't participate in any political clubs (which would be a big mistake). Those are the only people it makes sense for to me.
In reality, we shouldn't take the political opinions of nearly any college student seriously to begin with. It's not an insult to them, they're just flat-out ignorant and uninformed at that point in life. They lack any pracitcal experience or wisdom and are only capable of parroting what others tell them.
The fact that we do take their opinion so seriously — to the terrifying degree of implementing societal changes — is nothing short of pure stupidity.
Again, that doesn't mean they shouldn't have a say in things and it doesn't mean that they have no clue what's happening in current-day society, it's that at that age they're very easily manipulated and coerced into things, because almost all of them are desperate to prove they're "adults" and they're far more likely to be agreeable to whatever helps them feel like they fit in to "adult society."