Crypto trading is getting more and more technical as the days goy, and the formula that worked back then in 2018 is no longer accurate at this moment
More technical? Did people not use a specific trading technique previously? I think there is nothing different with the previous trading but traders may use varied ways in trading. As far as I know, each trader won't use the same way or a fixed technique (strategy). So, it is normal if they have a new technique (strategy) since they must adapt to the current situation of crypto market.
By the way, what do you mean by "formula"? Do you mean strategy? Sure, the trading strategy will be always developing, it can be changed along with the change in crypto market. Also, a trader may try to use a different strategy if they think their current strategy is no longer effective.
The trading strategy deviates from one coin to another because they have different performances in the market. Also, their development progress also differs from each other. So you need to adapt what is applicable to each project as you can't apply the same strategy for all alts. There's no perfect strategy in this market as you are just basing your actions on what you are seeing and observing. There are still underlying factors that traders are not well-aware of. Like we don't know if the team will rug pull or not, or they will resort to pump and dump. So there's really no defined formula in this trading market. It varies from one platform to another.