Most of these people throw away their documents because they're not real refugees and,anyway, coming to Europe is not a right....The EU isn't a global nursing home,it has borders and real citizens to protect. The Internet is full of videos of Turkish soldiers,policemen, gendarmes forcing immigrants to cross into Greece.
I remember something like this occurring when Turkey was threatened not to stop Russia from destroying idlib. That would have led to another 4 million refugees. Its pretty much forced Turkey to say to the EU that if you don't back me, i have no choice but to send millions your way. While all this was happening the EU was threatening Turkey that it would be an invasion to intervene against Russia in idlib.
From a Turkish perspective she can't feed and home 10 million refugees, so its either she forces the EU to accept this or she has to force millions more coming to europe, since they want to go to western europe the same way you romanians do.
However my own opinion is that the door from day one should have been opened to western europe, its not Turkeys job to feed or house these people. Its not really western europes problems except for a few states that support all these wars like france and england, but either way its not Turkeys job either.
On a side not it could also be cheap western propaganda used against Turkey which is in abundance. I still remember when British anti-EU media was portraying all romanians as rapists and criminals and why the EU was so bad that the worst kinds could enter the UK.