The gist was, a bare messaging+microblogging platform is, by its own nature, morally neutral[1]. Of course if the operator starts doing editorial decisions - like algorithmic timelines, or propping up/pushing down content, or manipulating user mood - then the operator clearly is making moral judgements & decisions.
Funny how respecting user privacy does, at least partly, absolve the operator from a lot of risks related to making moral judgements on a mass scale in a hurry.
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[1] with the only caveat that, if somebody believes facilitating communication to be evil or good, then it would be considered respectively evil or good.