Weapon and mob difficulty

For some reason, the difficulty levels on weapons and mob difficulty has been changed. There are still adults that play Minecraft and would like it back to how it was creepers won’t blow up all the blocks like they used to and the difficulty with weapons has become easier so there’s no incentive on getting a diamond Pickax or axe. Also mob spawner stop spawning mobs with a minute of you being in a mind, shaft or stronghold