Reading this blog, it’s another author who isn’t a native English speaker; and it shows. I’m betting there will be plenty of bugs and typos in this book as well unfortunately.
That doesn't mean there are no good Packt books. There are. It just means the average of quality will be lower than some other more picky publishers.
I feel bad for the good authors who get lumped together with the bad authors by virtue of their publisher. And I feel bad for the potentially good authors who just didn't get enough support in the writing process.
Don't judge a book by its cover or its publisher, but you may want to be a little more skeptical when Packt is the publisher on average.
I started reading "Mastering Linux Device Driver Development" a while ago but I found it to be almost unreadable, and I gave up after a couple of chapters. On top of the at times incomprehensible grammar, I found a few too many errata in the form of "can" vs "cannot", "only by" instead of "by only", etc... that change the meaning of the text significantly. It was too much work to pause every time I found the text confusing, to figure out what the author really meant.
Yes there are plenty of books that aren't that good, but there are also quite nice gems there.
Oreilley was good in the golden days of UNIX, nowadays it is just like any editor.
The few NoStarch books that I have, with exception of the Rust book, all seem quite superficial to me, more towards begginers.
I have the opposite bias towards orielly and nostarch books. which I regard as high quality. And I’m sure theres also terrible books there.