I think both things can simultaneously be true. There is a certain inevitability to technological progress. Once you reach a critical mass of collective knowledge, the resulting "thing" will get developed. If not by you, then by someone else.

But also, inevitability is not an argument for complicity. If you personally decide to work on bioweapons, I don't think you can shrug and say "eh, it was going to happen either way". As tech workers, we've really mastered the art of coming up with justifications for what essentially just boils down to "all my friends have gotten rich and now it's my turn".

I've met hundreds of sharp engineers from Facebook, Google, Microsoft, etc. None of them could look me straight in the eye and say "yeah, you know, what we're doing with ad tech is actually good". They just always had an explanation along the lines of "it's not that bad, and besides, if we don't do it, someone else will, and we're the good guys here".