PTLC fixes this

Can you explain? As far as I can tell the cost to spend one PTLC on-chain should be roughly the same as an HTLC?

Lighting the best network ever

"Will always be somebody willing to mine your low fee tx. This is actually creating more pressure on the market." (DarthCoin)

and let them troll attackers who are trying to troll other users by wasting their resources... :)

There are far more mischievous ways you can grief on lightning like channel pinning or settling HTLCs out of band.

Node runners who scrutinize who they open channels with will be fine.

Perhaps this is another big plus of Nostr, building that social network of trust that can underpin areas like Lightning where trust is required.