Sure! Anyone can do it if you have the right strategy in place, not only that it also involves discipline in order to navigate the challenges involved with trading in order to profit, but in order hands I don't that 1 week of profitable trading is enough to credit yourself though I don't know how long you've been trading but according to the post you said 1 week, because one mistake the next week can even take the entire money you've just made back from you, So it's good you test your strategy over a long period of before coming into conclusion.
Trading is not an inborn skill so yes anyone that has a strong will power can do it even if trading is tagged to be a hard activity here in crypto. It's only impossible to learn it and then do well in the first whole week if you are newbie so I believe that the op is well experienced already on this field. I only don't know if what he is trying to imply here. Is he selling some starts or he simply wants to encourage everyone to be like him to try trading but that was a good initiative if that was his intention.
The market cant be consistent. There are weeks where the volatility hits just right but there are times where cryptos are kinda stable but for a well experienced trader, I think they can do something and still be able to take a profit even just a little.