That`s exactly what propaganda is. It`s ugly and vile but that`s what he chose to do and with that intent.
I`m not excusing HT but there`s no way I`ll hold that against the novelty and good work he`s done over the years. If he was actually shouting what he views Islamic culture to be at people`s face on the street or social media, I could, but as far as I am aware, he keeps those opinions contained in his work.
I chose not to care about HT but I love the heck of the works I mentioned and to me they stand as projects that pushed the envelope of what you can achieve with the format.