Having a general opinion about things outside your very specific area of expertise in the world does not make you an asshole. It makes you a human being, and just as the comment above is also spouting an opinion outside the poster's area of expertise (unless he's an immigration policy and political analysis expert), the same right applies to a skydiver. I have a profession, but I also have opinions on many subjects I've read about in some depth. I should keep my mouth shut about them due to a lack of professional certifications because some people find it convenient to harp on that out of their own ideological fixations? Absurd nonsense.
Also, an opinion that doesn't tick all the check boxes of pro-immigration and open borders isn't automatically "hurtful misinformation" You should really qualify that particular line of censorious bullshit. More recently, the biggest fans of narratives about hurtful misinformation that I've seen tend to be authoritarians on the right, curiously enough.