"Dave Plowman (News)" wrote:

Anything which claims to do a multitude of tasks is always a compromise
compared to one optimised for a particular job.


So what?

If it sells in large quantities, and makes huge profits for its
manufacturers/distributors/retailers (and has done so consistently)
for over 40 years, that indicates a high degree of customer
satisfaction leading to very many repeat purchases.

I congratulate WD40 on its massive and enduring success. None of your
pedantic criticisms are in the least bit significant, except to you.