So my take on this is, even though Zuckerberg is definitely the only executive people attach to Facebook, when you go to the site it you wouldn't know it. He runs the show, but he isn't the show. When Musk took over Twitter, he was Twitter. He gamed the algorithm so that he showed up in your feed constantly (from what I read he even force unblocked himself from feeds.) He changed the logo for some time based on one of his inside jokes. He makes sure that he is Twitter.
You can hate Zuckerberg but still forget about him when you use Facebook/Threads/Instagram/WhatsApp. Musk won't let that happen with Twitter.