I don't disagree with you, just saying, it has very, very low risk, but as I state in my 4th point, it is a short term fix.
but a viable fix none the less.
the aerosol oils, like CRC230 or WD40 etc, are non-conductive and non-corrosive.
you can drop your entire PC (but not the HDD's) into a vat of the stuff and it will happily continue working (been there, done that)
the propellant (*censored*, so is the oil!!!) is flammable so take care when/where spraying (unless on wasp nests - bloody excellent for that situation!)