I also found that Elon was always in my feed even though I don't follow him, so I blocked him and now he's gone.
Then again, I don't know first-hand; I quit Twitter many months before it got this version of Billionaire Buffoonery as an owner.
1) block the brain parasite,
2) disable half of the UI using an ad blocker,
3) condition yourself to click the "Following" tab without noticing it, and
4) voila, now you have a semi-pleasant Twitter experience.