It’s sad to hear that. I would think learning particle Halacha is very important.
For example: Friends, who lived just upstairs from my daughter and son-in-law, both learned in a very chushuv kollel in Yerushalayim, came downstairs one Shabbos early afternoon. They said they couldn’t stay in their apartment because the pilot light went out on their stove and couldn’t stand the smell of the gas.
My s-i-l asked them why they didn’t shut the stove and they said “Shabbos.” The fact that it was a sakana and the building could have exploded was lost in their thinking. My s-i-l got up and went to their apartment and closed the gas. There also had been disasters stemming from the very same issue before.
So, their Talmud Chochom friend really wasn’t that much of a chochom.