Kashrut

Question

I have this new sefer that has pesakim of Rabbi Dov Leor, Rav of Kiryat Arba, and I would like to know if you think one can rely on the following two rulings he gives. 1. One can use the same sink for milk and meat, because it never gets hot enough for any taste to pass into other utensils, and also the soap is pogem. From this answer it's obvious that he means that you don't need separate meat and dariy racks, since he doesn't mention anything about them. 2. He says that today, since it is o longer dangerous, one can eat meat and fish together, and he quotes the Magen Avraham to Orah Hayyim 173:2 and the Darkhei Teshuvah Yoreh Deah 116:16