I have seen this type of spam long ago, but didn't mention it.
Blogger keeps adding new features just like other Google product/service. But leaves plenty of issues behind, you go open a issue tracker, 90% you will see lots of issues are damn old and unresolved.
As a normal user and someone who can code, I am really sick of it. It's not like you can fix on your end, they are server-side things. You can workaround, you can pretend you didn't see it, but you know the issues are still there.
Do they really use their own products? They must be aware of it.
There is no doubt that Google creates a lot of good stuff, but also no denial about this: they also close/kill/terminate/abandon good stuff.
Google, assign some developers for this kind of thing and old issues! Hire some relationship managers like Jen and bridge API users (the developers) and your developers. You don't need to deal with normal users since you have lots of so-called "experts" users on your help forums already.
But it's Google, I am just nobody, not someone who tweets would get hundreds retweets in an hour. Not someone who whispers would cause one hundred follow-up comments.
So, I would just suck it up and leave it rusty in the dungeon behind the red door.