The aluminum issue is a bit more nuanced than what you read online. Aluminum in deodorants is designed to block sweat (antiperspirant), while natural ones without aluminum usually just neutralize the odor. If your problem is visible sweat, you'll probably notice a difference and it won't be a good one. But if your problem is just the smell and you don't sweat that much, then a natural deodorant could work just fine.
What makes sense is to test it without pressure. Maybe grab one of these natural ones and use it for a normal week, not on a day when you know you've got an important meeting or you're going to work out. That way you'll actually figure out if it works for your body and your lifestyle, not based on the marketing. Some people do great with natural deodorants, others smell after three hours and switch back to the regular stuff. It's not necessarily a bad trend, it's just that it doesn't work the same for everyone.