Call me naive, but isn't simply completing every live hackthebox.eu box a good way to get some practice in to apply for certain security roles? Hacking 20 boxes

Call me naive, but isn't simply completing every live hackthebox.eu box a good way to get some practice in to apply for certain security roles? Hacking 20 boxes on various levels to me seems that you have what it takes. The easy ones are Metasploit and so on. The medium ones are attacks like SQLi or injection into MongoDB. The hard ones are simply a chain of those things with a lot less intelligence to go on. The insane ones also put some binary analysis or C vulnerabilities in there (e.g. heap overflows or ROP attacks of stripped binaries). Then again, I'm far too early in my career to know whether simply rooting all live boxes is good enough. Doing so myself has definitely helped me at my job as a full-stack developer to make the company I work at more secure. Here's an example of an "insane" box: https://www.youtube.com/watch?v=p8XkVDRtTQg https://www.youtube.com/watch?v=p8XkVDRtTQg And this is a "medium" one: https://www.youtube.com/watch?v=7QXzebQHEWA https://www.youtube.com/watch?v=7QXzebQHEWA