[srean]

In an ideal world yes, what you say is true.

However, human being human beings, they find it very hard to sequester their beliefs, emotions from their work. It's a common human failing. Often they are not even aware of it.

Having politically or socially divisive beliefs publicly also makes such a person a target of coercion and encouragement to yield to a "harmless" temptation by way of appropriate 3 letter like agencies.

To ensure that this does not happen will require maintaining a paranoid level of vigilance on the code all the time. That is a lot of work, very expensive and is unlikely to happen. Perhaps not fair to his creation, but that's just how it goes.

My comment is at a high level. This is the first time I heard of Simplex chat, so I don't even know what views its developer has.