I left Turkey just when Erdogan won the mayoral race in Istanbul, twenty something years ago. I go back every year since my family is there. The guy is a super egomaniac but just like in the US, or many other places for that matter, 50% of the population love him, the other half just hates him. But in a democracy where more than two parties exist , he remains in power with the support of 40 to 50%. The guy is a conservative and he has tried for years to nibble at the edges of the secular ways of Turkey but the Ataturk tradition is just too deep so he never quite succeeds. Turkey is a weird country man. You have the wildest night life where anything goes, and you have the most conservative people in the next town...and somehow it keeps working. When Erdogan came to power, everyone thought that was it...end of the pretty much only secular country in the Muslim world but like I said, it is still Ataturk's country.
This law was proposed before and did not pass. I highly doubt it will pass now. Of course they are trying to present it in a more "acceptable" way, like, an older guy has consensual sex with a minor (statutory rape) and they want to get married, what is wrong with that, but no one is buying it.