Auto-translated
This is already a matter of combat tactics, and everyone has their own – a complete absence of flying units will create problems, including during battles in arenas without fortifications, obstacles, etc. Earthquake only partially solves the problem. Of course, it's your decision, but balance is a fragile thing; in my opinion, it would be desirable for each city to have at least one flying unit and one ranged attacker.
Added 1 minute ago
In reality, the core of the Lizardmen consists of Shamans, Raiders, and Archers.