Moorwing comes back eventually, don't worry about it for now.
It's only 100%, the original HK went over due to updates. That said, bestiary progress doesn't count towards percentage luckily. You do not need to kill every enemy to get 100%.
Whenever that happens just restart Steam and it will look for updates again.
Moorwing filtered a lot of players because if you don't move the flea caravan, it blocks the entrance to Bellhart. That change makes sense imo.
As for Sister Splinter, I'm not sure why they nerfed her. I guess some players got overwhelmed by the spawned enemies in phase 2.
Not mentioned in the patch notes is that they apparently made many environmental hazards deal 1 damage instead of 2, including the worms at Blasted Steps and the cogs in act 2. This is huge and it feels like classic team cherry to not include it in the notes.
You will definitely start feeling the heat. Some act 3 bosses are rough.
Minor spoilery balance talk
On the other hand, act 3 feels like the easiest one to cheese. You gain access to really powerful tools, some of which can be spammed to just annihilate harder fights. Once you have fully upgraded tools you can let it rip.
Hahaha, have fun.
If it's any consolation, I did find act 2 to be easier than act 1. Keep at it.
TLDR
It's mostly a bug fixing update, but weirdly they nerfed Sister Splinter which I thought was one of the easiest bosses in the game.
Slight increase in pea pod collider scale
Huge! It might not feel like a big difference but this will make pogo bouncing off those things much more consistent
Fixed Snitch Pick not giving rosaries and shell shards as intended
So I'm NOT crazy. I tried them for a short while and was sure they didn't do anything.
I also beat the game earlier but
Act 2 spoilers
For what it's worth the final boss in Hollow Knight was also very easy. No doubt there will also be some super hard true final boss so it doesn't bother me much.
FWIW they did nerf the final DLC boss heavily over a month after release, he's now fair and you can dodge his previously undodgeable attacks.
Boar guy is ass, I'm with you on that one. Luckily he's totally optional at least.
I really enjoyed SOTE but I'm just not a fan of how they did progression. Just finding items that increase your damage and defense was kind of boring compared to the main game where you made complex builds. It also made replaying the DLC kind of a nightmare because you have to run around collecting fragments before doing anything else.
But exploration was fun and so were the bosses IMO :)
No, but I'll do those at some point.