[mhss]

It's more complicated than that. Becoming a go-to person may get you promoted, if the company has an adequate value system. No company is perfect, but they vary a lot and you need to find companies where they at least try to promote the right people.

[oscillonoscope]

It also depends on what you're the go-to person on and what the promoted position is. Being the expert on some low-level technology isn't necessarily going to help you get promoted to a managerial position or the upper tiers of technical positions.

[mhss]

Exactly! it varies by organization and you need to find what your organization cares about, what it values more or less. This is where talking to your manager, observing who gets promoted, etc; The worse organizations are those that say one thing and do another. No organization is perfect, but they're also not equal by far, some of them try to do the right thing, even if imperfectly.