That doesn't invalidate the point though. You can be entirely ethical in the goals of your platform, as well as have a legitimately ethical audience you hope to

That doesn't invalidate the point though. You can be entirely ethical in the goals of your platform, as well as have a legitimately ethical audience you hope to cater to and still run into the problem pointed out. The only argument you need to make for a competitor to make sense is "<Platform X> isn't perfect." That's accurate for all of them. A good competitor will have all the same challenges a 'bad' competitor would.