Porfirio's whole office excuse for trying to get rid of Juarez, and then Lerdo after him was no-reelection. He just wanted power and picked whatever excuse he could.
Juárez also was considered already some sort of autocrat since he was the president since 1858 and he intended to reelect himself. Lerdo de Tejada was overthrown by the Tuxtepec Revolution, led by Díaz, because he intended to be reelected. Yes, Díaz was essentially an autocrat, but that doesn't excuse both Lerdo and Juárez of aspire to similar goals.
The Constitution allowed reelection at that time, so,
constitutionally, Díaz managed to reach power and maintain it. Another of the reasons he stayed reelecting himself was because the intellectuals wanted him to be reelected. The
Cientificos (said intellectuals, inspired by positivist ideals) considered that a
transitional dictatorship/hybrid regime was beneficial to the economic and political development of the country.
This article (in spanish) examines the
Porfiriato and concludes that even respected intellectuals like Justo Sierra considered
necessary the reelection of Díaz to secure the development of Mexico:
Justo Sierra, in his first period, was convinced that the Díaz regime should be imposed with its personalism and authoritarianism, because:
The indigenous class will be a perpetual obstacle to the normalization of democracy, because their hereditary tendencies and traditions condemn them to live under an oligarchic and patriarchal regime at the same time, the only political means that allows them to live in peace, the only one that exists under the disguise of constitutional and liberal principles.
Sierra offers an aseptic version of Diaz's seizure of power and legitimizes his constant reelections.
The intellectuals were tired of the chaos that the country had and favoured (or tried to enforce)
Order and Progress, the positivist way of life. My point is simply:
1. That characterizing the
Porfiriato as a mere result of Díaz being a person with hungry for power is wrong, when the conditions of Mexico and the political thoughts of the Mexican intellectuals demanded someone that enforced an autocracy if that helped Mexico to finally stabilize;
2. That even if you remove Díaz from the equation,
someone else will become him. It doesn't matter if its Juárez, Lerdo de Tejada or even Maximilian.
Order and Progress will be enforced, because that's what it was demanded. Autocracy, in that sense, is basically unavoidable.