I agree with your view on this too (though I'm not fan of FreeBSD, quite opposite), OS doesn't seem relevant here much.
I do observe similar cases here and there, especially on "small" sized projects with Laravel/WPs - basically there is no one to say "hey guys, 20 years ago, the same type of load was working faster on my Dual Pentium 3 server with 512MB of RAM - what your code is really doing under the hood?"
I do observe similar cases here and there, especially on "small" sized projects with Laravel/WPs - basically there is no one to say "hey guys, 20 years ago, the same type of load was working faster on my Dual Pentium 3 server with 512MB of RAM - what your code is really doing under the hood?"