re: Poker & Donk strategy profitable?
It's just one approach out of many. Some people prefer to play tight and wait for good hands/blind increase to wide their range and get chips in, others prefer to wide their range from the start and tighten up after. Basically the same thing.
Although the latter is mathematically incorrect. If you have 50BBs, then it's a mistake to risk them on a flip (or worse) to win 5 or 6. Assuming you are not the only good player at the table following that strategy, here's what will happen:
1. You will go all-in for 50BBs, nobody will have a barely decent hand to call, and all you win is the dead money in the pot (which is a 1.5-to-50 ratio, which is awful). This is the best case scenario.
2. Someone playing the same strategy than you will call with a fair hand, and now you are most likely on a flip for your tournament life right from the start, which is totally not worth it since the blinds are so small at this stage.
3. Someone playing tight will call you and now you're way behind.
Meanwhile, someone who actually waited for a while will be playing the same hands as you on a much profitable situation. For example, Q9s is an awful all-in in the early stages, but when the blinds increase so much that you have 12BB, it's a pretty good shove, and if you double up to 24BB you are still in pretty good shape.