Hex to ASCII conversion of output scripts generates unexpected characters
Apparently, the ASCII text is split between multiple TX output scripts, and each one is actually a multisig script with the data bytes inserted in place of the public keys.

The letters actually correspond to ASCII symbols which are the opcodes forming a multi signature script, see https://blockchain.info/tx/4b72a223007eab8a951d43edc171befeabc7b5dca4213770c88e09ba5b936e17 "Output Scripts".

Only the data between the opcodes should be treated as text if you want to decode it.