Question

Hello Rabbi,
From what I’ve read, I understood that the reason the halakhic decisors prohibited eating meat together with fish is because it is dangerous to a person (as stated in the Talmud), and therefore they still rule this way today even though everyone knows that it is not actually dangerous. 
Does the Rabbi think it is permitted to eat them together? Like legumes, about which the Rabbi said there is no longer any logical reason to prohibit them today…