There’s probably nothing wrong with cleaning such a lens but is it really necessary and will it improve things? Trouble is that the hi-fi fratenity have a long standing reputation for selleng, apparently/allegedly essential/better, equipment to gullible people.
They’ll sell you a pair of wizz bang interconnecting phono leads for £100 upwards but I’ve never seen them used in a recording studio. The most expensive you can buy at Studiospares (a well known UK supplier) are less than £23. You’ll also find that hi-fi buffs are sold on “special” speaker leads which claim to preserve all sorts of “original” features in the music which, given that no studio uses them, can’t logically exist in the original recording.
This myth was de-bunked in an article in Studio Sound magazine back in the 1980s when the legendary Hugh Ford anylised the technical effects of different sorts of wire. Yes, he said, these expensive cables are better but any effect is unlikely to be heard in speaker leads less than a quarter of a mile long. But still they sell them!
Clean your lenses by all means and let us know the results but beware of the King’s new clothes.