We had the same arguments in the U.K. during the referendum to drop FPTP. Strangely, the people making those arguments on Reddit all disappeared the day after the vote. Call me a conspiracy theorist, but I am convinced that was Russia!s proof-of-concept for what would become their information warfare against democracy.
OP, you are most likely genuine and good meaning, but understand that Russia, China, and many other bad actors want you to keep FPTP because it's so much easier for them to manipulate elections. Any argument against change, even if said change is not perfect, is in their favour.
Mostly, he's been doing the dirty work for Russia.