It’s a toy for people who are interested in hacking/pentesting. Sure, you can do everything it does with a phone, but without the toy like aspects.
Tbh you can do literally everything that a PC can with a phone. Doesn’t mean that a phone is the most fun to use for whatever you’re trying to use it for.
Now Android and Windows devices aren't safe from Flipper Zero either (news.retiolus.net)