Defending a freedom that's under attack doesn't indicate the 'sole' interest in that freedom. Attack some others and see what happens.
Look what happened when Michelle attacked the kids freedom to eat whatever they want in schools. They rebelled, and won.
What are you referring to? They are attacking other ones... Trump is currently proposing attacking consumer freedoms via protectionist tariffs and his fan base isn't saying one word. He's surrounded himself with people who've made their intentions clear with regards to rolling back certain provisions for womens' right and LGBT rights, his fan have remained silent on that as well.
Freedom of religion (and I use the term loosely as many conflate that with meaning "I get to make everyone else live by my religious code whether it personally impacts me or not") and Gun rights are the only two they seem to care about.
They've shown that they only selectively care about freedom of speech... when there's a right wing protest, they support it (or at the very least, support the idea of them being able to do it), when it's a left-wing thing, "the police need to shut them down, they're communists, they're traitors, they're paid protesters from Soros", etc, etc...
Obviously they don't care about individual freedoms pertaining to what a free adult can or can't consume in their own home as Sessions was proposing ramping up the drug war. Trump (and his cronies) have publicly stated support for provisions that are blatant endorsements of civil asset forfeiture...so there goes the 4th amendment.
What are these other freedoms aside from guns and selectively applied 1st amendment rights that Trump supports are so passionate about?
As far as the Michelle Obama food thing, they opposed that simply because of her last name...had a conservative proposed the idea, they'd be raving about how great it was and how "it's so nice that the first lady cares about the kids". The fact that her ideas were even conflated as a restriction of freedoms was laughable. Nobody said kids couldn't bring in their own lunch, it strictly addressed certain standard for what the school served. She wasn't personally picking out which items got served, only setting guidelines. If the school cook can't make something that tastes decent that's under 1500 calories, that's the school chef's fault, not hers.
Of course a 4th grader is going to say that 6oz of turkey breast and green beans isn't as good as pizza and tater tots...kids getting no guidance in that realm is why we have elementary school kids that weigh as much as full grown adults should.