Armor damage reduction

Armor is very useful un Minecraft: it protects you from different damages, but in some cases, it protects against something which it shouldn't protect

Armor reduces the following:

• Projectiles (arrows, thrown tridents, shulker bullets, fireballs)
• Melee attacks
• Guardian's Laser 
• Guardians's Thorns and Thorns Enchantment
• Damaging blocks (lava, magma blocks, cactuses and sweet berry bushes)
• Pufferfish
• Explosions 
• Fireworks with at least one firework star
• Lightning
• Falling anvils

Some of these damages however, don't make quite sense:

• Guardian's Lasers
• Magma and lava 
• Lightning
• Explosions

I suggest to make that these 4 damage types are not reduced by armor