The price for one bitcoin increased for several $ thousands within the past months while the mining costs remained more or less the same! I didn't check if the difficulty also has increased within the past 3 months, but if not then everyone who was already in the process of profitably mining received some $ thousands extra per coin.
Did you even try to read the linked article? The difficulty rose exponentially...
In shot for ppl that don't care to read the article but like to comment on articles that they didn't read:
- mining profits always drop in time to a minimal level
- its not worth the effort if you do it in small scale and you don't have access to cheap hardware or electricity
- if your counting on the price of the coin to rise then its cheaper to just buy the coin
That's also a good way on promoting your course you do offer but on some points I do really convinced on some factors why mining wont really be profitable on most cases. The main factor on here is the electricity cost.This is one of the things which do affect profitability if its expensive in your country then its pointless to set up mining farms unless if you are willing to risk and don't mind on profits just to fulfill your habit or passion to mine crypto then it should be fine but for most miners we do normally seek out on being profitable.