Congratulations, you did it!
If I were to diagnose, I'd say that wear pattern is mostly from the hi hat.
Unless you bashride the ride a lot. If you're playing Till Tuesday...I'm guessing it's from the hi hat.
Check and make sure you aren't holding your sticks too tight. Your fingers are the shock absorbers. If the stick is mashed up against the palm, like holding a hammer, then the fingers can't absorb the shock. That will cause problems down the road. Look into this sooner rather than later. Hey I could be totally wrong, but it won't hurt to analyze your grip to be on the safe side since you're fairly new at this. Learning a bad technique could be worse than not playing at all. Shock absorption using the fingers..that's the goal. Don't let the shock transmit into your wrists and forearms through the palms. Use the fingers like springs to absorb the shocks.
I can't believe that stick didn't break earlier, judging from the surviving stick.
As a PSA, VF uses a 6% moisture content for their sticks. As per the furniture manufacturing industry.
Vater uses an 11% moisture content for their sticks, as per the striking tool industry. Which makes more sense, considering that we definitely do strike things with them.
The result is that Vater sticks last twice as long as VF. All while maintaining the same balance feel as VF, important.
Former VF user here.