Crypto Mining - Questions from someone who is not looking to mine, rather understand the theory
First of all: Not looking to mine, just curious in general.
I am, among other things, invested in crypto. Due to this, I am also interested in learning more about what I am actually invested in. As such, mining is one of the topics I understand is important to know, as mining efficiency and interest can (probably) be an indicator as to how successful/bright the future of certain coins can look like. In general, it seems mining has become more and more unpopular and I have read many times that it is not worth it anymore. This would probably also have an influence on crypto in general as less miners would likely equate to a shortage of processing power to generate more coins, right? Again, I am a beginner in this field.
Today, I was suprised to find the post below in a gaming related forum I am in (definitelx not a crypto focused forum) and it seems like even a "small" mining farm can produce profit as well as contribute to the currency in question (in this case ETH). Is the guy mining ETH because his processing power/farm is too small to be efficiently mining BTC? Why is he mining ETH and not SOL/ADA or some shitcoin? What factors motivate a miner to mine a specific currency? All these are questions I am asking myself to try to get a better grasp of how all of this functions. I definitely know providers (such as Hetzner) are not big fans of miners (esp in shared environments). Have you been mining crypto before? What got you started, what made you stop? Have you learned anything during the process? How dependent are small/new coins on an audience that is interested in mining them? Do all coins require mining? Anyway, as you can see there are many questions and I am holding crypto more for the sake of diversifying my portfolio rather than having understood it thoroughly. Any input/explanations or links to useful resources are more than welcome