What do you think about this 0G mod? On the other hand, this apprentice mod...

What do you think about this 0G mod? On the other hand, this apprentice mod says that Testnet is useless & brings bad news to Testnet users. If it's true that Testnet is useless, they have to test it themselves on their own website with several brands of consumer cellphones. Whether it's a bug or too heavy for all users, that's just a small example