the biggest imo indicator that it is gonna pop was dram makers not promising to expand production

Well, they might have gotten a little wary from previous boom and bust cycles. Perhaps they are a bit wary about the economic sustainability of the whole AI thing. However, perhaps they also might be driven by greed at this point. Why not just constrain supply and increase margins whilst they are no real competitor?

Nothing wrong with not wanting to go bankrupt if the bubble pops. It isn’t an indicator, it’s risk management.