[_2d30]

So pretty much just vague references to some studies? Your second reference link is literally just the title of a study and you cite nothing directly from it.

For the first study, you have conveniently focused on "supersonic flight" as the issue which is not the fundamental issue cited in the article (link isn't working for me, btw, I had to google it find it myself). The fundamental issue is in aircraft fuel and the sulphur based impurities it carries. Starship burns Methane and LOX. In general, these fuels (fuel and oxidizer) are typically kept as pure as possible and are unlikely to contain much more than trace sulphur impurities as there removal is a standard and well followed practice.

So for full clarity, your argument as presented here is completely without merit and it looks like your first study was intentionally presented in a way to obfuscate its extremely tenuous link to the issue at hand.

As an aside, you're also quite focused on your mood affiliation with the topic, doing things like asserting the motivation of those you reply to without any evidence (eg 'You willing to risk it because "space is cool"?'). This won't help you think clearly about a topic.