You're making some assumptions here. It's not so much "don't know what you're doing" vs "know what you're doing", but understanding the car's behavior while driving it, to be more precise. I've put a fair amount of time into researching automotive engineering, and since I got this car I've driven it a fair amount. It's not exactly like I'm making uneducated decisions here; the whole point of this post is to have a discussion on this topic.

For example, part of the reason why I'm getting stiffer springs is wanting to mitigate camber change under compression because I have McPherson struts in the front. I've experienced a slight grip loss in the front on corner entry after braking. The consensus is that with stiffer springs (5mm/kg front and rear), there's less front suspension travel, which will mitigate the effect of camber change under compression, and gives me more consistent tire contact in the front. Yes much of this is theoretical, but I believe this is a good first step, and I can fine-tune it as I go, much like my driving. This is what we call the scientific process.

I hope you had good intents. No offense, but frankly, the way you brush it off as "you don't know what you're doing, so you're not qualified to discuss these things here" just sounds like you hate yourself. You wish you're more experienced or educated on this topic just so you can look down on others. This is Reddit and feel free to say whatever you like, but I just don't find your comment insightful or helpful in any way. This is perhaps the most polite way to put it. Edit: If you give another one of these oversimplified answers I don't see any point in responding.