Air filter

Looking for experienced opinions...  These pics are of the inside and outside of my air filter and pre filter.  I know it's fairly dusty and in need of a compressed air blow-out.  But with dusty air filters being a result of normal use, it means it's doing its job, am I right?  Give me your honest opinion, does it look bad enough to restrict airflow enough to cause an engine to overheat and seize the piston and rings?  Does it also show any signs of allowing debris ingestion into the engine top end?  I appreciate any opinion from experience.  
 
 

That, NEEDS REPLACING...   Their cheap enough. 
 
A knock off on Flea Bay is better than that one.
 
Besides making the engine run richer (lesser air flow), and make more carbon (bad),
dust / crap sucked in will certainly shorten the life of the engine / top end...
 
BTW, it won't cause overheat nor seize the piston.  Pull the starter cover and blow out any debris.
 
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if your a cheapo you can also soak both in solvent and make sure there are no holes then dampen with gear oil before re-installation

Thick one is made of paper and cannot be cleaned.   
 
The pre filter, yes...
 
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