I might be in the minority on that, because I thought that was a great, practical solution to the options available at the time - quick recharge for a couple of minutes plug time, without needing any adapters or cables etc. I think a lot of people thought you were supposed to use that all the time to charge the pencil, when it's just an emergency option.
I definitely use it as my only way to charge the pencil, how else would you do it more efficiently ? plug into USB adapter and stick it out a wall? The new way to charge is great though! I basically leave my iPad Pro on my desk ad use it like a laptop, so some way to charge from the top edge for me would've been the best solution