Thats a huge strawman.
You cant equate "we forgot Shadowsun's point costs" or "we intended it to be this way but printed this another way" with actual game-changing errata.GW produces rules with no errata follow up: people complain
GW produces rules and regularly follow up with errata: people complain
It murdered competition out of the market and brought the company record profit, revitalizing interest in a game everyone was expecting to get "the end times treatment". What are you talking about?GW introduces new edition that requires complete refresh of all codexes: people complain
'preserves' is too strong a word for the interaction between 9th and 8th edition codices; it is correct in a technical term but that ignores the actual playability and strong points of the factions.GW introduces new edition that preserves older codexes, supported with errata where necessary: people complain
To be honest I never read rulebook terrain complaints during 8th. It was more an acknowledging of Ruing > All, or complaints about ITC terrain rules.GW introduces terrain rules that are simple but not very meaningful: people complain
GW makes terrain rules a more significant part of the game: people complain
because 'people' is a strawman. The customer and player base are hugely varied so different people with different preferences will complain about different aspects. However, the vote that matters, as to what are people buying, seems to indicate 8th Edition was great. We'll see in a year or two if 9th acomplished what it set out to do, in cold hard numbers.GW writes rules that are open to interpretation and exploitation by edge cases: people complain
GW writes much more detailed rules that close off the need for interpretation and edge cases: people complain[