TBH, I don't see a lot wrong with what you've quoted above but more than that, I'm really struggling to care less.
In fact, I find the signature in Post 3 to be more obnoxious but maybe that's just a matter of taste.
In any case, I don't see the need to single out a specific user and make derogatory comments about him / her in a public forum.
I see from your post, that you appear to have thought long and hard about whether to post your comment or not... I would have chosen the latter.
There are quite a few large and obnoxious signatures that I've come across on XDA during my time here...
The ones I used to have to suffer on a daily basis, I no longer see thanks to AdBlock
I really wouldn't like a dev telling me to thank him first before he gives me the download link further down the post. Agreed it can just be ignored, but it shouldn't be like that..