That's a good question: if there's a majority of Turks who support the regime, what's the problem? Can't we like, leave them in peace? Do we have to impose western politics everywhere in the world??
This and people confuse western politics with humanity and moral standards and that is an area in which Turkey is nose-diving at an alarming rate. Very concerning indeed :(.
As for Qatar and Saudi Arabia, again, if they were not rich countries would they be allowed as much slack as they do.
Still, maybe people had enough of this level of corruption and double-standards being allowed; Which may in part explain how people vote in today's times.
Turkey is a NATO ally and has a very powerful and experienced military as well as a strong sense of national identity. The USA could not openly intervene like it did with Iraq, Syria and Libya.
That religious group has been ruling the country with their own politicians, lawyers, soldiers for the last 40 years however they want. Erdogan helped them gain power against real secular people and even jailed secular soldiers and journalists with this partnership. Many good people died in jail because of getting cancer.
Currently he is in a war against his old friend Gulen and clearing Turkey up from them. Both secular people and his fans support this action as that group ruined the country.
However Erdogan is upset at EU and US because they left him alone with his war so that's why he tries to provocate EU. Don't give a meaning to his sayings/actions.
Btw Kurds and PKK (terrorists) are very different. Don't get fooled by western media.
There are at least two problems.
First, the "will of the people" argument works only if there is a strong culture of democracy, respect for the rule of law and proper representation of minorities. None of those things exist in Turkey (I'm Turkish). Typically, what happens when Erdogan wins elections is that he views it as a "mandate" and starts oppressing the shit out of his opposition by jailing or exiling people who disagree with him. He has gone so far as to use his party to change laws in his favor. And all those infrastructure improvements he has made? They have all enriched himself and his buddies (called "crony capitalism").
Second, Turkey is an extremely important player in the Middle East. If we want the region to stop spiraling out of control, there needs to be a modern, stable and secular democracy with a Muslim population there that can be used as a model by other countries. Otherwise the region will always be in turmoil, which will inevitably spill over to Europe and the rest of the world (in the form of refugees, extremist terrorists, etc.).