His embrace of new technology was interesting, in particular the fact he's been doing a lot of work on an iPad since 2010. You can see many of them here[1]. I went to an exhibition[2] of these a few years ago and was pleasantly surprised by them. Goes to show that it's the artist and the talent, not the tools.
Apart from just being so beautiful, so full of attention to nature and the world around us, his work also explored how photography can’t capture or communicate the seeing and feeling with two eyes. To that end, he embraced photography, attempted to express movement and volume using photo camera(s), his polaroid works are beautiful, and then he came back to painting. He wrote and spoke about his process and "seeing" the world a lot, I really recommend it if you are into visual arts.
[1] https://www.hockney.com/index.php/works/digital/ipad
[2] https://www.royalacademy.org.uk/article/article-david-hockne...
[0] https://howard-hodgkin.com/resource/painting-with-light-quan...
He talks about it, and you can see some of these works in a YT vid here:
https://www.youtube.com/watch?v=rz5vWgKy2Sc
David Hockney: Art's great innovator whose vivid paintings made him a household name
https://www.bbc.co.uk/news/articles/ck77rg88gd9o
The BBC article was written by a guy who has precisely two articles published on the BBC.
I don't think it's wrong to want to read the best article, not the cheapest.