I can think of a number of reasons why elal would not make a seat map that shows genders available.
The main reason would be money.
When it comes to cost, every seat on a flight matters. Depending on the circumstances, most of the seats in a plane just cover operating costs forf theairline. Only a few seats actually make the airline a profit. If even a small number of seats are empty on a flight, the airline loses a lot of money for that flight. Therefore, airlines try everything they can to sell all the seats every flight.
Making a seatmap available that shows where babies are, will probably not affect sales. It just makes it convenient for passengers to attempt to make their flight more enjoyable. However, if a passenger sees that there are no other seats but that seat next to the baby, there is a very small chance that he will actually cancel his flight. Sitting next to a baby is only a relatively small inconvenience.
If elal would make a gender seatmap, it would be a little different. There are many Jews that would probably cancel their flight if they see that the only seat is next to a woman. Instead of all seats being booked and some having to be switched around after boarding (a minor inconvenience), the flight will have many empty seats from last minute cancellations.
As elal is a privately owned company that doesn’t care about shmiras shabbos, there is no reason why they would risk losing a lot of money just to cater to shmiras einayim.
Captain™