To each their own. I have over 30 devices on my network and am no where close to 300,000 unique queries but maybe im significantly underestimating the average user.
Considering how many other good free solutions (or non subscription based) there are I tend to doubt paying for the pro version of NextDNS is worth it if you are going over the free limit.
Such an overused trope and really isn’t relevant with DNS resolvers where there are multiple good and, proven, free options.
Not to mention there are tons of things people pay for and still end up being the product, ISPs being a major culprit.
I always find it ironic and, a bit laughable, to see users make that statement while participating on a free social media platform.