You are very right and in the real sense of it, you are still not late at all, because if you opp in now and still hold for some time, even if you can not double your investment as predicted, you shall be more than been brake even for sure. All things been equal, come in with moderation, by not investing wholesomely all what you have but by diversing into few other better and researched ones in any case of eventuality. Also ensure to consider risk, where you should not invest more than you can afford to loose.
I agree with better late than never because we still have time to try. but if we do not join or we don't make any decision then we cannot get something benefits. and I think if you can join in the cryptocurrency right now, you are not too late to make the investment so you can make money in the future. and this time, you have a good opportunity to buy bitcoin because the price drops too deep so you don't have to use a big money to buy a whole 1 bitcoin but you have a choice to buy some fraction of bitcoin.