> I suspect a part of the left dislike is also around the progressive anti-billionaire/anti-capitalist sentiment, it makes Elon an easy “enemy”.

He IS an easy enemy in this regard, not only to the left. All his (mis)behaviour, naming his child like that, manipulating currency rates through tweets, that's not exactly what average people could afford. If he didn't fit this stereotype of billionaire, I'm sure he would be liked more.