No need to bring all of your moral judgement into everything.
Would you treat a wounded criminal or would their criminality effect your ability to treat them?
1. Turkey's government is brutally suppressing opposition
2. The means Turkey is using to identify its opposition is flawed.
You don't have to talk 1. to talk 2.
Case in point is that you can legally talk 2. in Turkey but if you talk 1. you get fucked. If you try to fight 2. you help a bunch of people if you try to fight both 1. and 2. at the same time the chance of you solving 2. is diminished because Turkey's government will be suspicious that it is propaganda against them because you included 1.
Thus: one problem at a time.
Also remember that your attitude leads to shit like Iraq. Its perfectly "legitimate" for a government to be autocratic. Russia is a government, Iran is a government, China is a government. They wield the power, is that not legitimate?
You seem to be suggesting that only "legitimate" governments are democracies and that sort of attitude leads us back to Iraq where we go on a liberation war and heroically give people a democracy that they didn't fight for themselves. Reality is messy and complicated and "nice" ideas like making everyone have the good government are well intentioned but naive.
I will celebrate the day Turkey gets its democracy back but it has to do that itself and its not the problem of anyone who isn't Turkish as their "help" may well hinder.