No one could predict the future and this is why these kind of spendings is something that we couldnt really blame on that someone who do make use of their coins for such transaction.
Yes, its waste because if we do try to convert out that amount of as of todays value then it is really something that life changing. Not all are really meant to be that rich or to be successful
because if you do have just that strong belief about bitcoins potential then you would be able to cherish out that extreme profit that you had made out.
Well, not everyone could be able to hold up for too long.
Yes, It is true that no one can predict the price of Crypto like Bitcoin accurately but there are some people who still make a prediction about its price in the future. Like you said, no one can predict the future. So basically, he didn't expect or he didn't know that Bitcoin's price or value in usd would reach $28k or even reach its ATH before because if we can predict the future then wouldn't spend his BTC to pizza since he will know or he knows what will happen in the future. In the end, if that happen during this time then many people will say he just wasted his money and I think some people will say they can't believe that someone is paying that amount of BTC for a pizza or maybe some will say harsh words like he is an idiot for doing that. Honestly, there's nothing we can do since it's in the past and we shouldn't take it seriously.