If an admin edited/deleted your blog, it is most likely because you phrased something in a disrespectful manner that came off as if it sounded like you were bashing someone/something. The admins on this website do take bashing and disrespectful behavior very seriously. But I didn't read that blog of yours so I'm not sure what could have been said in it that came off as bashing to an admin. Though, the advice I can give you is always try to remain respectful in your blogs. Read over the blog a few times before submitting it and decide if you've said your opinion in a respectful way.
If you know the admin who edited/deleted your blog, you could always send them a message and ask them if they can fill you in on what part of your blog counted as bashing. Though the admins do deal with a lot of reports so there's a chance they may not remember yours specifically, but it's still worth a shot though, right?