Sliding in? Your head of state declared themselves to be a dictator, declared the end of the rule of law, and ignores the constitution. They openly take bribes without consequences. They, or their handlers, unilaterally decide on the application of justice and the progress of investigations. They unilaterally control international relations (eg tariffs) without oversight. They put armed military on the streets. They have taken action to prevent ongoing democratic elections.

At what point does it become authoritarian to you?

if mid-term elections and the next presidential election are cancelled then i'll call it authoritarian. Until then you're just trolling.