[Going strong]

If this man is not totally, clinically sick, I think a motive could be, has to be (logically), that he was, up to a recent date, a "Trump supporter", but changed his mind and decided to deal a severe (though unjust) blow to the Republicans just before the mid-term elections.

I mean, either he's completely crazy, or he had to know that he was offering an immense gift to the Democrats, with his grotesque and evil fake bombs. So what would be his motive? It can only be, this man was not a Trump supporter anymore, or, maybe he never was and had been preparing his act for two years.

Maybe Sayok posed as a Trump supporter for two years, preparing his devastating attack on Republicans (through manufactured victimization of "Liberals"). Because, it's a fact that Sayok has just given new hopes of victory for the Dems, and he could not possibly ignore this.

So I see three possibilities:
A. Sayok is crazy, clinically nuts

B. Sayok was a Trump supporter up to a recent date, then changed his mind (being rejected by true and serious Trump supporters maybe?, thus Sayok could have become infuriated and plotted a revenge?)

or C. Sayok is a cunning gay stripper who always hated Trump. So Sayok prepared during two years his bad deed, posing as an outrageous extreme Trump supporter, preparing for his fake bomb campaign, to be launched at the most damaging moment.

I could even add a D option here, concerning Sayok possibly being paid or manipulated or both, by a foreign service (see the post by Scorpion above, but note that it could apply also to a foreign intel service, manipulating Sayok).

(Note by the way that one fingerprint of Sayok was conveniently and nicely left on one "bomb", it does seem to have been left on purpose, either by Sayok or by his handlers).

I am in any case quite sure of one thing: like in the Vegas case (whose shooter somehow reminds me of Sayok), the full and complete truth will never be known.