I would say your saddle is definitely too high, in that case. I find with one pedal up I can put the other on the floor quite comfortably. However, it does depend on the stand over height of your bike which is one I'm not familiar with. If it has front suspension then it will normally have a greater stand over height than one without suspension in order to allow for the suspension travel - which is why my mountain bike is taller than my road bike. The longer the suspension travel the greater the allowance. So, I repeat, go by the saddle-to-pedal set up, not by whether you can reach the ground.

Your comment about the scratches on the crank is interesting. Do you also wear the soles or heels of your shoes unevenly? If so there may be an issue there which might be corrected by a wedge of some sort, but I think you'd need to be using cleats for this.

On a related subject, I was having huge problems with getting saddle sores on my road bike. I lowered the saddle by only a centimetre and the problem has mostly gone. Getting that positioning right can reap unexpected benefits. If you're struggling to get your cadence over 70 rpm that could also be because your saddle is too high, but it's also something that comes with practice.

John