huh?
ego? - have I ever given any advice out of ego issues? - I have met a few members here and I think they can attest that I am a common man, almost invisible if you met me in real life.
now - you mention that hard water stains on glass as etch, I would disgree because, that stain is actually a "stain" its a buildup of material which is adhered to the glass, etching on the other hand actually changes the physical surface of the material irreversibly. e.g. if you acid etch a brass item, you cannot restore it back without mechanical means which means removing that etched layer, speaking of the same brass material - they do get tarnished which are reshined with some naphta distillate, the tarnish is not classified as etch.
using the same example on paint, you can fill in microscratches on paint from wear and tear (debris hitting it on highway) because the coat structure is intact - you can cut it down to "polish" it but there is no way to revive an acid eaten clear coat as it delaminates (in this case so strong that even the glass is etched), its not about ego or SAAB paint or trying to diss detailers - but there are certain limits on repair fundamentals.
examplifying mechanical terms - if a cylinder is worn oval and has bad compression rings on the piston, using liqui moly ceratec wont magically build up the missing metal. The only repair that can bring it back to service spec is a larger rebore and replacement of piston and ring assembly.
We dont know if the OP actually cares about this truck finish (honestly I have never found a land cruiser owner who shines his truck) - but my posts are backed on experiences I have studied and seen on production line as well. The slime coating used in olden days was exactly that, mercedes benz used cosmoline - I think we are discussing two avenues - you are assuming its a peppered surface, while Im recalling the ugly etching that I witnessed.