You can't blame what some people think about him, he just brought this market to a new level, especially DOGE. It's not illegal, otherwise, he is arrested, but we know for a fact that it's called manipulation because he uses his popularity to influence the decision of the people, though in an indirect way.
Some of us may find Elon Musk tweets annoying or what he doing was messing up the cryptomarket. Making people follow whatever he mention like shilling Doge in his tweets which make Doge move from the previous standard to levelling up what Doge market standard have right now.
Now, we can't blame people believing Elon Musks because he has a power to attract because of his influence and because of his wealth.
And the fact that it was their choice, ain't have right to stop them. It is just like they appreciate what Elon Musk did and besides, they are also benefiting from the so-called manipulation that he brings.
We find this place crypto market full of surprises, ain't that all manipulated as I still believe. It just happens that influential people like Elon had something like charisma that could really attract people to follow what he says.