But I’m eager to hear from you about this topic. What do you think? If you’re a parent, have you tried not giving your teens smartphones? And if so, how’d it go? Did they file for emancipation — or did they appreciate it? Let me know: insidertoday@insider.com.

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• Developing: Elon Musk asked Twitter users in a poll if he should step down as CEO. They voted “yes.”  Follow the story here.

• Prince William cut all contact with Prince Harry over his Netflix series, according to a royal correspondent. What we know.

• A Russian tank unit deliberately attacked another Russian position in Ukraine, per a report — illustrating the vicious rivalries within Putin’s army. More here.

Musk has a tried-and-true playbook for doing business, writes Insider senior correspondent Linette Lopez. And while he’s used it for years to build companies from Tesla to SpaceX, it’s not a model that can turn Twitter into a profitable company — and it may even take the social-media company down in flames.

At the core of every Musk company is a big, world-changing promise that can be deployed to win over and raise money from a fervent group of true believers who are kept on the hook with flashy, half-baked product ideas. Plus, there’s often billions of dollars in government funding, and a fleet of overworked, undervalued employees.

These employee-punishing, product-pushing tactics may have worked at previous stops in his career, Lopez writes.

But without a world-changing vision for Twitter to distract from his sophomoric product ideas and erratic management, his takeover of the social-media company is in deep trouble.

Twitter’s users have caught onto the chaos.

Last night, Musk asked Twitter users if he should step down as CEO, saying he’d abide by the results. The poll closed this morning. Just over 17.5 million people participated, and 57.5% — or around 10 million — voted in favor of him giving up his role.

• Disappointing photos show what train travel is really like around the world. Insider reporters spent 225 cumulative hours on trains this year, and found that while traveling by rail has its benefits, it can also be plagued by delays, mediocre food, and underwhelming upgrades. Here’s what Insider’s staffers were disappointed by.

• A couple with 22 active Airbnb properties explains why they want to “quit” the platform. The pair brings in $1.3 million in annual revenue from their listings — but said they’re turning their backs on Airbnb to get “more control” over their business. From influencer marketing to social-media advertising, they shared their plan for striking out on their own.

• Investors list the healthcare and biotech startups they expect to take off in 2023. We asked top investors to name the startups most likely to succeed in the coming year. The companies they nominated work on everything from cancer research to in vitro fertilization. See their 33 picks here.

• A food fight is raging over what we can and can’t call “meat.” Plant-based food startups are fighting the meat lobby for the right to describe their products as bacon, burgers, or steak. While some are backed by NBA stars and actors, the legal costs could be the “kiss of death” for others, one VC investor said. Find out more.

• A chef changed the name of his restaurant from his nonbinary child’s deadname to their current name — and business is booming. Dave Heide’s new restaurant, Ollie’s Madison, bears his kid’s chosen name. Heide said he didn’t give “a crap” about his old restaurant brand; he wants his child to be healthy and happy. Read the full story.

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