This is a review from someone who has been watching demon slayer since the first air, not when all the hype surrounding it had begun.

Story and Writing: 6
This anime has a very mediocre story that is poorly written. This also applies to the characters who are cliche and shallow, with Zenitsu being the only decent one. First of all, the beginning is a cliche of a tragic beginning. Secondly, the story simply progresses with Tanjiro meeting new friends and foes and becoming stronger. Ring any bells? The overall main goal of tanjiro is a decent concept that gave me interest to watch the anime in the first place. We weren't even given much background onto tanjiro's family to give us a viable reason to follow on with tanjiro's goal with nezuko. The only thing we could draw from it was taht he probably loved his family. The final scenes with Tanjiro and the crew on a train had the most predicatable cliche and dialogue that I swear I've heard a million times in older anime. The episodes after tanjiro's near-fatal fight were really boring to sit through, like whos there to spend a few hours in total watching an MC go through rehab. The ending was overall generic and was on a mediocre level.

Visuals: 10
I have nothing but respect for the visuals and choreography. This is of the overall animation, art style and fight scenes. The realistic backgrounds had somehow fit in well with the art style.
Sound: 9
Again, like the visuals, very well done.

Characters: 7
Tanjiro is quite the shallow mc who happens to be gifted like most shonen MCs.
Zenitsu is an exception as a unique, laughable and likeable character who is more liked across the community.
Nezuko is just a young girl whos cute and serves importance in tanjiro's journey.
Inosuke is youre typical bloodsthirsty madman.
Thus, The character writing of this anime is poor to mediocre. C+ to -B

Enjoyment/Entertainment: 7
I had a decent time watching this but I ended up dropping this anime multiple times due to how i felt that there wasnt anything exciting or new. Nonetheless, the aesthetics is what had kept me to watch it. I will agree that the anime begun to be a little more interesting when the crew met characters like Muzan, Yushiro and Tamayo. The spider demons were also interesting villains. Thus episodes 10-20 were quite good But, these few episodes caused the anime the skyrocket in ratings and popularity, becoming things like "The best ever" and "super enjoyable", to a point where it topped the charts of anime platforms like anilist, MAL and streaming services, likely because of studio ufotable's excellent animation. The animation had somehow drawn everyone away from what the anime really is. It showed that good aesthetics would make an average anime the best ever. This went to a point of winning Crunchyroll's annual Anime of the Year award, much undeserved.

My final rating has some correspondence to the ratings I mentioned earlier. This anime deserves no more than an 8/10 but the rating in how much I like and how good i believe it is a 7.5/10.

This is strictly my opinion, the anime is still pretty worth checking out.