You can't really and make a profit. You pay more in electricity than you get in crypto.
...unless someone else is (unknowingly) paying for the electricity.
(Of course, when the price of crypto takes an upturn, sometimes it might get profitable again. And I'd imagine there are people mining it even when the price is low banking on the idea that it'll spike again and they can sell it.)
Also there are various specific cryptos that are easier or harder to mine. I believe monero is quite easy and bitcoin is more difficult, for example. I swear I'm not a cryptobro, I'm just a computer nerd who has been asked to explain it so many times that I have an okay understanding. Plus I had a CS teacher who was super into crypto and did a few lectures on it. You are generally correct, though. Also apologies for incoherence. My brain is not braining so well today.
No joke. I'm ashamed to say I have had to endure Weblogic in the past. God was that time a massive clusterfuck.
The company I worked for decided to use two particular separate products (frameworks, specifically; ATG and Endeca, even more specifically) to use in tandem in a rewrite of the company's main e-commerce application. Between when we signed on the dotted line and when we actually started implementing things, Oracle acquired the companies behind both products in question.
The company should have cut their losses, run away screaming, and started evaluating other options. That's not what happened. Instead, they doubed-down and also adopted several other Oracle products (Weblogic and Oracle Linux on (shudder) Exalogic servers) because that's, of course, what Oracle recommended to use with the two products in question. The company also contracted with Oracle-licensed "service integration" companies that made everything somehow even worse.
And the e-commerce site rewrite absolutely crashed and burned in the most gloriously painful way possible. They ended up throwing away tens of millions of dollars and multiple years on it.
When the e-commerce site rewrite did happen, it was many years later and used basically only FOSS technologies. I guess at least they learned their lesson. Until the upper management turns over again.
So this has shit to do with Linux, it's Oracle doing Oracle. Great, you pay through the nose, get abused and for that you get shitty software that allows hackers to take over your machine. All sorts of awesome