Hacker News is not immune to the vicissitudes of society at large, and there is similar discontent against tech employers in non-game industry as well. There has been both sentiment in support of unionization at large tech megacorps like Google [0], and (non-union-related) sentiment against predatory startups that give misleading promises while forcing employees to assume both greater risk and lesser reward. [1] Not to mention there seems to be less hero worship of founders than there was in the past. [2]

There is a generalized dissatisfaction that the wealth generated by tech is not adequately being reached by its workers. Union advocacy is only a component of it. Tech might pay better than other industries, but its workers are just as affected by costs in housing and healthcare, just as everyone else.

[0] https://news.ycombinator.com/item?id=21923085

[1] https://news.ycombinator.com/item?id=21865065

https://news.ycombinator.com/item?id=21868022

[2] https://news.ycombinator.com/item?id=21973333