Employees are more threatened by the prospect of offshoring and H-1B replacement labor than by their egos. Unlike cops or plumbers who can't be easily replaced by remote teams abroad, tech workers face the real risk of being replaced. Strong unions exist across many industries precisely because workers naturally form them to protect their interests and to preserve their way of life.
The 'tech bro' mentality is no different from ego in any other profession. Unionization isn't about eliminating individual personalities, but about collective worker protection.
If only we could replace the battery, then I'd be on board. Supporting MCP is actually really cool, it could interface with home assistant or anything else.