> Back when he was first elected in 2004, Erdogan was not the huge asshole that he is today. His party actually conducted a lot of useful reforms that were beneficial for the country. / Over time though he slid into authoritarianism
That is the standard practice of authoritarians. Rarely do they announce before being elected, 'if you elect me, I'm going to do away with democracy and become a dictator'. First they get elected, then consolidate power (including by governing in a way that builds political support), and then they seize power.
The fact that he behaved in the way the parent describes doesn't mean he didn't plan to seize power as an authoritarian dictator (and it doesn't mean that he did). If the future authoritarians were easily identified ahead of time, they wouldn't have much chance of advancing their plans.