These aren't the same things and nobody negotating and acquisition or acqhihire converts in this way. (I've done both.)
> Fear, Uncertainty and Doubt. Your anecdote is little more than a scare story. It can be summarized as: if you don't let us cashout this time, we'll hold this against you in some undefined future
It's a personal anecdote. There shouldn't be any uncertainty about what I personally believe. I've literally negotiated acquihires. If you're getting a multimillion dollar payout, you shouldn't be particularly concerned about your standing in the next founding team unless you're a serial entrepreneur.
Broader online comment, invoking FUD seems like shorthand for objecting to something without knowing (or wanting to say) why.