Note that the WD40 company sells a bunch of other stuff under the WD40 brand-line, including actual non-penetrating-oil lubricants, like grease (https://www.wd4

Note that the WD40 company sells a bunch of other stuff under the WD40 brand-line, including actual non-penetrating-oil lubricants, like grease (https://www.wd40.com/products/true-multi-purpose-grease/ https://www.wd40.com/products/true-multi-purpose-grease/) or silicone (https://www.wd40.com/products/silicone-lubricant/ https://www.wd40.com/products/silicone-lubricant/). You're right though, that classic WD40 is intended to get mechanisms unstuck and de-moisturised, it does have lubricating properties but is a very light penetrating oil so it should be followed by actual lubrication of the relevant parts. In fact misused as a lubricant I assume classic WD40 can flush out the actual lubricant, which leads to making things worse over time.