The article is pure speculation. I hate this type of crap. It’s news AFTER something occurs and it should be reported on then. With that said, the engineer in me can think of several ways to destroy the tunnels with minimal casualties. That begins with what the IDF has already done. They cut the power. That means no ventilation in the tunnels and it would eventually limit the time Hamas can stay in them. As for any hostages in tunnels, that’s a shame. At this point, military planners have to consider the hostages dead. I’m not from the school for negotiating with terrorists over any issue, particularly hostages. It only begets more hostage taking in the future.
Personally, I could care less about the enemy casualties.