We know more about the later politics of Ivan Aguéli than I thought. The Swedish journalist Eddie Råbock points to two passages, some notes from 1904 and some comments in a letter from 1917. In both cases, Aguéli had moved far from his early anarchism.
In 1904, Aguéli was calling for democracy under the control of the ulama, i.e. much same system that was meant to be introduced in Iran after the Islamic Revolution (the reality, perhaps predictably, did not quite correspond to the theory). In 1904, Aguéli was still something of a revolutionary, ending his note with "Fight capital through the agrarians, as the King of Italy does. Fight snobbery." The reference to the King of Italy is explained by Aguéli's engagement in Il Convito, which was pro-Italian as well as pro-Islamic.
Later, letters written in Spain during the general strike of 1917 show that his sympathies were by then definitely not with the revolutionaries, but rather with the king and central government.
These positions fit with the positions that René Guénon later took. Having the ulama in charge, especially, fits with the idea of the primacy of spiritual authority over temporal power.