I use the free plan for some admin zones, few users, maybe 20 uploads/month. Now i have to pay or rework the file uploads. I feel "dark patterned".
I'm using them for some commercial projects just as a client side library to allow uploading files to my s3 account (although they do some work on their server side as well). It's a shame they're changing the terms for the existing user. I don't expect things to be free - unless they are offered as such, with no expiration date.
I dont expect good stuff to be free, and Ink is indeed good, but i still think this goes into the dark pattern category. I bet there are many devs in our situation, and plenty will just pay.