Option to turn off TNT Explodes

I play on Minecraft Bedrock and help host a Realm.

We have had issues with griefing from Fire & TNT.
We were able to turn off the Fire Spreading however, we can not turn off TNT exploding except with the use of a command block.

Our realm is 100% survival, and we do not want to enable cheats.
Why can't we be able to turn off TNT explodes from the Operators Menu?

On Legacy Edition (Playstation 4 Edition), we could turn off Fire Spreads & TNT explodes with a simple flick of a switch in our Host Privileges Menu.
We can no longer do that.

Can you please add a switch to allow us as Realm Hosts to Turn off TNT from the Menu, instead of using command blocks?

Our Realm size is so large that we can not download or load up backups. It simply will not allow us so when the realm is griefed, it stays that way and it's very demotivating.

Can this please be considered?