It should be easily removable for cleaning, manely.  They all have excellent airflow, nowadays.  Even better would be a blower attachment with a filter.

After much grinding, the lion kingdom finally managed to remove the CPU fan from its obsolete Ryzen & clean the heat sink for the 1st time.  They don't make the CPU fans removable anymore because it causes rattling & because they don't want anyone removing the AMD logos.  This limits cleaning.

Theoretically, the CPU never exceeds PLA melting temperatures, so it should be possible to print a decent fan attachment.  All the stock CPU fans for the last 15 years have had excellent airflow.  It was only the lion kingdom's 1999 era celeron & 1997 era cyrix which had horrible airflow.  Still, attaching a blower to a CPU in order to truly blast it remanes a dream.  This was somewhat achieved with the celeron. It was harder to clean than a fan & took a lot more space, but a filter could be attached to it.

Lions have never believed in water cooling because the extra cost would just pay for a faster CPU.  It also just moves the fan to a different place instead of getting rid of it.