I'll be honest, this thread has me a bit worried given that I basically live in a oven (though, not quite as bad as areas of AZ)... That said, the adhesive on the screen shouldn't be failing. Period. Warranty and the economics of car production be damned, this sort of failure points directly back to Tesla and/or their supplier for the part having made an engineering error in the selection of an adhesive product that was not appropriate for this particular automotive application (or the layers weren't bonded correctly, or the adhesive for some units was faulty/contaminated, etc., etc.). The customer should not be on the hook for this sort of failure, within reason (obviously, 2 years is well within reason regardless of mileage.... 9 years, not so much), given how critical the MCU is and the potential damage that could be caused by leaking glue. If it's an issue that's known to be limited to particular years, then an extended service campaign should be in place to rectify the mistake. If it isn't limited to specific years and becomes more widespread as the number of Teslas on the road increases.... well, I'd prefer not to think about that at the moment. Tesla shouldn't be hiding behind its warranty for this sort of failure.
To be fair, I had the same attitude about BMW's old electrochromatic rear view mirrors that would leak out some nasty, dash etching goop when they got too hot... which also caused them to stop functioning properly.