PoE2 is a great. I had alot fun playing it.
I don't think the pirate theme is bad at all, but it is just a little too stereotypical imo: everywhere are pirates, everyone is drunk and also talking like that and OFC there is somewhere a kraken hiding and a Davy Jones ship that is not being owned by Davy Jones, he got replaced by a female skeleton thingy called Lucia Rivan. I really felt SOMETIMES like playing a Pirates of the Carribbean game. It's just a little too much.
On the contrast however, PoE2 offers great combat, multiclassing, alot of really unique items, turn-based mode, cool and challenging bosses and alot alot to explore. Unfortunatelly the main path literally consists of only 4 quests, which is just too little imo (Crypt -> Hassongo -> Ashen Maw -> Ukaizo -> Done).
Furthermore PoE1 had a really dark story, from my perspective, which I liked alot. I really liked Thaos! He was mysterious and I was actually looking forward to get somehow more involved in the Leaden Key in PoE2. As I said the pirate theme is not bad at all, but the transition from PoE1 to PoE2 was so weird for me. From a dark story into an overall alot happier atmosphere (besides what Eothas is doing ofc).
Summarized I would still say PoE2 totally deserves a 90/100 aswell as PoE1 because it does alot things better than PoE1, especially gameplay/combat/quests, but I was just hoping personally for a much darker and longer main story for the sequel. If they would have continued the dark theme and introduced more mysterious characters, like Thaos, PoE2 would have been 95+/100 easily.