While development occurs for those fpgas john-connor will eat the block reward

You're a troll bro... Even if John has spent $38,000 USD on 100 ztex units (he doesn't have that many, based on
https://i.imgur.com/tO25V1y.jpg he has 19.), he still wouldn't even have close to 10% of the network hash.
You actually stated that John bought 500 units. You really think he spent $190,000 on mining equipment? Sure....
Network: 841.86 GH/s | PoW: 31,949.70 | PoS: 2.51 | Blocks: 195,335
The fact that he purchased 19 FPGAs @ $380 each shows his long term dedication to the coin, if anything. It will take nearly a year for him to even recoup his initial investment (ROI).
On a ZTEX Quad FPGA every single FPGA is shown in CGMiner, so this screenshot shows he has 5 (!) FPGA Boards, not 19 or 20 (don't forget to count the 0
Board = 20 FPGA's, 20 Spartans mining.