I do not know why this time should be linked to Tesla that sold 75% of their bitcoin holding. The amount sold is large but no significant effect.
You said that tesla was involved before so why not this time? Or maybe you are not totally convinced because you see that price seems unaffected and price did in fact rise a little. Oh well, maybe the effects were just delayed. That happens sometimes so we shouldn't be confident that much. We can sell some now in case we will be needing the cash later on because the price can fall again at some point and it may have a hard time to recover again.
Tesla will sell their bitcoin holding, it could be because of business reasons or a way to manipulate the market in the future, but it was good that Elon Musk sold this coin and not having significant effect on the market.
The feedback that I am hearing are mixed. There are those who said that it was due to business purposes but there are some who says that they did it because they want to manipulate the price of bitcoin again.