Some of his recent efforts:
Satellite Internet [0] (kudos whatidonteven) - I don't think he thought this one through. What is wrong with the current approach? Should we really erect wires in outer space?
He is currently kind of harassing the IETF via mailing lists about IPv10, threatening "If the ideas explained on these drafts will be used, discussed or published by the ietf, legal actions will be taken." [1] - not really how the IETF works.
The version number as "ingenious" 4+6 is annoying, IMO. That's not how version numbers work?
His drawing on his his very own routing protocol - KRP - are also something [2]. Although the quality of his drawings has nothing to do with his ideas per se, it seems he rushed it together in an afternoon.
I don't want to say that he is overestimating his own intelligence, rather that he is underestimating the efforts, hard work and intelligence of everyone else working in this field mostly professionally. His proposals can not easily be judged, because they dismiss almost everything that others have done previously. Why should so many smart people have missed these (obvious/simple) solutions? We are where we are for a reason. You need a good chain of arguments to "dismiss" the current state of the art.
[0] https://tools.ietf.org/html/draft-omar-si-00
[1] http://ietf.10.n7.nabble.com/RE-IPv10-KRP-and-RRP-IDs-Remova...