WTF, you're just spreading nonsense. Take a look at this image and see if you can tell just looking at it which of them is tsla and at what time musk commented: https://imgur.com/OwwKVyf that includes every one of the stocks you mentioned and there is one clear outlier. No other stock has a clear change at that time, and the behavior of the one stock is clearly different than the rest.

I do not doubt you could perform this same analysis limited to tech companies and get the same result (though comparing tesla to these tech companies is rather irrationally aspirational).