In a morbid way every IDF death costs Isreal much more than a hamas fighter; not to get reductive over this conflict, because I personally value all human life equally but in terms of war planning this is very much the case.

If you imagine the newest gen of tank (Merkerva) they have for example; it has a trophy system, requires you to be backed up by infantry willing to both provide recon, forward observing and covering fire incase (like we've already seen hamas do) of someone just running up to it with a nade; nevermind just dropping a nade on it with a drone (which we've seen hamas also do)

The cost for hamas to do this is;

1 nade

or

1 nade and a drone;

which is about 2k usd in real terms; if they manage to blow up a modern tank and crew within; thats at least 6 million dollars on just the tank alone; add ammo and crew training and it is just pissed down the drain; they need to go train the specialized crew for that tank for 6 months to a year, replace all that expensive smart ammo and convince those highly educated tank crewmen that this time will be different.

Same applies with any specialized gear; they know that all they are actually good for is reducing gaza to dust; if they want to actually go in (which they will need too) the tech advantage begins to mean less, its how the viet cong won despite using 1950 soviet weapons against a force with fighter jets, tanks and modern military equipment; morale starts factoring in, and with gazans they have put the fear into the rank and file IDF fighter already.