Does Flex Seal really stop water leaks?

I've been hearing a lot about Flex Seal lately, and I'm curious about its claims. Specifically, I'm wondering if Flex Seal really does stop water leaks effectively. I understand that it's a popular product and has a lot of positive reviews, but I'm still skeptical. Can you tell me more about how Flex Seal works and whether or not it's truly effective at sealing water leaks? Additionally, are there any limitations or drawbacks to using Flex Seal that I should be aware of? I'd appreciate any insights you can provide on this topic.