Also has a lot to do with how much cash you throw down to get all the cards you need. There’s some very good F2P players out there that just lack the right cards...
so, it’s not just a skill thing.
Of course you also need cards , but if you have enough experience you can make it even with a homebrew deck to Legend atm .
Oldguardian always posts f2p deck wich u can get Legend with each expansion... Also the german streamer C4mlann made several new accounts and tried to hit Legend ( in the old system!) , as completely f2p from rank 50 and he made it after 4-6 days( or even faster sometimes).
But even then whiners came up with the argument, well he can do it because he is such a good player... like no s..t . Skill matters way more than money if your goal is simply to reach Legend.