i dont know how a GX could be less reliable than a 4runner, all the electronics are Denso and or the same thing that is either in a 4runner or a Land Cruiser... so you are saying that the 4runners and land cruisers have the same problems then...
i work on my own vehicles for 90% of the work they need, occasionally ill take it to the dealer. both times i have been to the dealer with my Lexus i have had the best customer service i have ever experienced,i have worked at two BMW dealerships both with outstanding service reputations. anyhow i have always been provided with a loner car at no cost, snacks and coffee and they always leave a box of chocolates in the vehicle for me when i come to pick up my Lexus. for the extra $10/hr i pay in labor at the Lexus dealer compared to a Toyota dealer ill gladly take my GX to the Lexus dealer and get the free loaner(Toyota does not offer this). i think what the techs see more of is the typical Lexus owner is more snoody and pompous than a Toyota owner -hence the more butt-kissing that goes on at the Lexus dealer, and the owners typically have a much higher sense of self entitlement... they tend to nitpick and expect everything on the vehicle to be under warranty or last for ever, and or they dont want broken or non working parts on their cars, much more so than the typical Toyota owner. so thus you see the Lexus in more for little things, not to mention most Lexus owners are not mechanically inclined in the least nor do they know about up keep or basic maintenance. hence needing more repairs because of owner level neglect bla bla bla... i could go into the argument for pages, based on personal experiences i have had at BMW dealing with customers and their traits.