You should only rate a work 1/10 when you have read at least 10-15 chapters and found it disappointing. I can't help but think those who rated it 1/10 haven't even read 5-6 chapters fully. Only rate it this low when you have either read the full series or at least half of it.
This series is interesting and just like others said in their comments, it might not be the best out there but its really far away from worst. Read the first 10 chapters and you won't be disappointed. At least, you won't rate it 1/10 unlike some brainless nerds who rated it this low...just after reading 1-2 chapters.
Agree with the above mod and have to add that it is not just this series that deals with that, people give 1/10 rating for the most silliest and idiotic reasons imaginable. I even recall someone that enjoyed a series and gave it 1/10 due to the ending, that is a bad reason, I mean you liked it right? People are just way to fast at giving a grade without a second thought, the same can be said about 10/10. I would personally give attaque about a 7/10 it is good but not great.
I know and that's why I started this thread. Many potential readers are ignoring this work because of the rating. Well, sure you might find a series worthless and rate it 1/10 and I agree with that. But at least read it fully, OR care to explain your reasons in the comment.
I would also rate it same like 7.5/10 . Not the best but certainly too far away from the worst.