From what I understand the palnet.io is just a front end interface like Steempeak, Busy, and others so many others. So you do have to be logged in on that site to post on that site whether a post or a comment. It is an easy fix for anyone trying to get to something to just change the palnet.io to steemit.com or your preferred front end. If someone doesn't want to create an account on the .io they don't have to. All tokens are redeemed on the Steem Engine site so the front end is non-essential you just need to use the tag.

I personally use Steempeak for my front end. With the new Tribe function, I just click on PALnet, SteemLeo, or such and I'm taken to the my feed for those that I know that are a part of that tribe, then you can click on Most rewarded or most recent posts to see what the .io has going on specifically. The wallet is much more comprehensive. I could go on. There are more positives than negatives. The only downfall versus eSteem and Partiko is there isn't a specific mobile version and you don't get upvoted.