Hmm... I would say that is what the *editing* process is for.
I very much agree. Now I would never hold any game publisher to a perfect standard. Some errors are going to be missed, some mechanics that seemed ok will turn out to not be, shit happens, ect. Issue a few pages of errata down the line, no big.
That said, Catalyst has historically been pretty bad at both editing and getting errata out for Shadowrun 5th (I can't speak to other game lines/editions). This time they had the errata team on go before the book was even released. Now on the one hand, that is good. Shows progress. On the other hand though, I am kind of stunned that the book needed 10 pages of errata, upon release, and that is only the beginning. Also that they either missed all of this errata, or knew it needed it but didnt bother before sending off to print. Kind of blows my mind honestly.
For PDF users, it's not so big a deal if they insert the errata. For folks who like paper though I am sure it is profoundly annoying.