[bcrosby95]

It was included because changing data using records (copying it except changing the fields you need to change) is a shitty experience, so rather than showing the code you have to write, they showed you code you may or may not in the future be able to write.

[dlbucci]

Seems like an odd thing to mention. They are arguing that records are better than data classes, but part of their argument is "maybe, in the future, at some point, I don't know, it will be as easy to do this thing with records as it already is with data classes, we'll only need to add new syntax and a new keyword to the language".

[krzyk]

Who is they?

You mean the article author? Yes, it was odd that he mentioned that, but besides that not a bad feature to have (but a bit wordy for my taste, I hope they'll change that).