I'm not going to claim that cast iron is the best at everything, it isn't. That said, most of the people who dislike cast iron do so because they don't actually know how to use it. Anyone who is an accomplished cook learns that there are different techniques appropriate to different tools, and cookware is just a kind of tool in the kitchen. You should use different techniques with cast iron than you use for stainless steel than you use for non-stick than you use for copper, simply put. There are a number of commenters in this larger thread that are describing issues with cast iron that are directly caused by using the wrong techniques.

One of the great things about the Internet though is that there is truly a wealth of information out there to learn these things. I was an okay cook before the pandemic, but I spent most of my free time during lockdown learning how to cook and even found an online culinary school I could take classes through. It made a massive massive difference both in the quality of my output and the level of frustration I experienced during the process. I went from dreading cooking to really enjoying it as a form of zen.

If you use the right techniques to match your tools, everything starts to come together easily.