One thing we know about MAGA is they are not shy and retiring, nor are they remotely worried about how they are perceived.
If Musk want's to take them on, they will be more that looking forward to a fight. And he may ....may .... just be stupid enough to think he can get them to back down if he threatens Trump. Which is certainly what I would suggest to Mr. Musk as a gesture of goodwill advice.
"Say Elon, old bean, I see that you're getting some bad press from the MAGA contingent. Why don't you remind them that you could crush Trump with a single tweet. I think that would settle them down."
Normal people wouldn't care, but we know how remarkably thin these peoples egos are.