If people still believe that this increase is due to Elon talking about these things then I have nothing to tell you anymore. I am not guaranteed to say that it is because of him or not, I can't give data why people end up buying bitcoin, not like we can ask every single person who bought bitcoin in the last week why they bought it. However even if, EVEN IF, it was all because of him, we should not say this, we should not talk about it, we should not give him the right to manipulate the market however he wants.
Why do most people think that Tesla accepting bitcoin will make bitcoin go up? I mean it is basically the bitcoin that was already bought changing hands, what makes bitcoin go up is people end up buying bitcoin and in this scenario there are nobody buying bitcoin, just bitcoin owners giving their bitcoins to Tesla instead of keeping it themselves. This is why I honestly think that Tesla accepting bitcoin is not a big news and it will not make bitcoin change anything at all, it will not even move in price at all, it is totally useless information.
There could be some people who mistake it as a bull news and end up buying bitcoin and maybe caused this increase we are seeing these days, but it is not really something that is going to really get way too much attention, it is basically a short temporary thing that people will eventually realize it is not a big deal.