Guys, "innocent until proven guilty" is the essence of all law. Making a claim against someone doesn't automatically make them guilty of something. Yes, things like that have happened plenty of times in Turkey in the past. But "false accusation" and "camur at izi kalsin" and "bilgi sahibi olmadan fikir sahibi olmak" have also been extremely rampant in Turkey.
Construction workers aren't exactly architects or structural/civil/building engineers. Most only have an elementary school diploma. That will hardly qualify as a "subject matter expert" in a court proceeding. Besides, there are many reasons a construction worker can complain about a contractor. For example due to mistreatment, low wages, poor working conditions, trying to coerce the project owner into giving him more money, etc, etc.
All I'm saying is that if you're making a claim, then the burden of proof rests with you. And that proof has to be based on tangible evidence be it scientific lab reports, building strength surveys, expert statement, voice recordings, evidence pertaining to any fraud, etc etc. Afterall, there are ways of scientifically measuring the amount of iron/steel/concrete and their density in a building and building inspectors routinely do so.
If you're going to claim that a newly constructed building is unsafe for human habitation, then you collect the evidence to back up your claim and formally file a complaint with the authorities. You don't go on a TV show and talk smack about Kentsel Donusum Projeleri as a whole.
When you do that, you're not seeking justice. You're just trying to stir schit!
If you ask for it, construction/housing companies are required by law to present you with 3rd party testing/survey/lab results showing the building's certification of strength in the event of a earthquake. Also, you can obtain a report or check if a building has one (or not) from your local "Çevre ve Şehircilik İl Müdürlüğü".