To be honest, this ending feels extremely underwhelming and rushed. But I think it's definitely a result of the immense pressure of making a weekly Shonen Jump manga which had an adverse effect on Gege Akutami's health and wellbeing. He literally had his appendix taken out and only took a 3 week break from the manga. 

It does really sadden me to see amazing stories not fully meet their full potential because of the unfair pressure the manga industry puts on mangakas. So despite the ending being a bit disappointing I really don't want to see anyone blaming Gege Akutami for this because I think he did an incredible job given the circumstances.

It would have been better if the plot slowed down a bit and properly explored the emotions of the characters. But all in all, I am happy at least that a lot of my favourite characters survived and the ending has a generally hopeful tone. 

Despite everything, this manga will always be extremely special to me and close to my heart. It was an incredible ride with the highest highs and the lowest lows and the biggest shocks of my life. These characters are so, so beloved to me. It was a great experience reading Jujutsu Kaisen weekly and I can't wait to see it all animated. 

If Gege Akutami makes a new manga, I would be very excited to read it. But I really hope he can take a break and look after his health first.