Don't be all gloom and doom. I agree with your parent comment that it's a reasonable law, and the general sentiment that it's manageable both when you're small (not a lot of overhead in collecting one user's stuff and shipping it) and when you're large (automate all the things). And I don't think that many requests will come in, even while the new law is still hot.

Also, 99% of the law already exists in the Netherlands. I did my first request last week actually, after I discovered a company did WiFi tracking on me. I got a reply today, very professionally and complete (and fast, I should add: they had 4 weeks). I was impressed and it gave me a lot more confidence in the company. And it didn't look like it cost them a lot of time, either.

maybe show what you got under profile settings somewhere or button which will email you report with all or frequently requested information.

Its probably safe to assume that the person you're recommending this to has absolutely no idea about the general concepts of software development, or the rough orders of magnitude of information that is reasonable to store and serve with modern infrastructure available to nearly any small business.

Its reminiscent of the willful ignorance displayed by the Cuyahoga County Recorders Office, in Ohio. The office responded to FOIA requests by demanding $2 per photocopy, even though the documents were already stored on CDs. They hoped they could simply make freedom of information too expensive. Their legal argument was that the files could be semantically thought of as photocopies of the documents.

Here's a verbatim reenactment of a deposition in the case where a county employee puts on a charade of not knowing that a photocopier is.

https://www.youtube.com/watch?v=PZbqAMEwtOE