Generally, hacker culture is very much against top-down authority and prefers organically grown, community-driven, distributed approach.
It's no surprise that the facebookization of SO is not welcome by them.
The same thing is happening on Reddit, Twitter and other platforms. The Internet is finishing the transformation from Napster, IRC, torrents, enthusiast content and hacking to corporate-sanitized marketing-compatible monetized influencer space. The new focus is engagement metrics, ad placement, brand protection etc. Traditional mainstream TV content is now taking up larger and larger share of online space, same with traditional newspapers.
You have to take this larger context into account. If these people could shut down the web, they'd do it in a whim and forbid anonymity and reverse everything that made the web so popular and drive everything back to cable TV but with likes, followers and shares, of course with a real name policy, with phone and ID confirmation.
This is not about the Thanks button, but a disregard for the community, and top-down dictates.