whenever you read something about bitcoin is "dead" or something like that you should always check the price first. if you saw it dropping or on a downtrend that means people saying that are just desperate for a drop to buy more bitcoin or they are shorting bitcoin and want more profit.

in any case you should always use your own judgement. study bitcoin and try to make up your own opinion about it, even if you were wrong you won't blame yourself because you did your best.
nobody is going to care if you lose money just as they won't care if you become a millionaire.