Aged car paintwork deterioration .. Toyota too

[Malc1]

My 95 Ls400 , now 29 years young, and my 91  Ls400 too, have both deteriorating factory finish paintwork 

The 91 car I know not it's bodywork history but it all looks pretty original'ish to me .....  bought her last August

My 95 car I have had some 13 years and 127k miles of it's nigh on 250k miles upcoming   ......  it's lived in Bournemouth before coming to Kent

The 95 car finish is rapidly deteriorating, as tho' paint mice are scouring it away   ...  a local buddy on here with 2 similar age Ls400s is also experiencing similar paintwork issues ....  and all over the past 12 months or so

Alongside this, my nephew's daughter ( Newmarket way )  has a recently bought 2ndhand 2007 Toyota summat or other and that too is showing similar paintwork deterioration 

My nephew's seen similar Toyota aged paintwork issues too he tells me

On the Ls400s I can appreciate that maybe the age factor just comes into play and we see this specifically, it stands out, coz we don't see many other such aged cars on the roads these days   ..  and if we do then maybe they've had paintwork repairs / resprays 

Anyone else with aged Toyota or Lexii have paintwork concerns worthy of note ?

Could it all be weather climate change pollution related maybe ?

Your thoughts are welcome  please 

Thanks

Malc

[GSLV6]

My old 2007 GS had a few paintwork issues at around 11 years old Malc which I had to correct.  Fading and some iffy top-coated areas.  I ended up buying a Daspro6 D/A polisher and using Menzerna polishing compounds before applying menzerna lock & seal polymer coatings.  I first washed the car, used a medium clay block to clay the surface before cutting and polishing.  That worked a treat.  I think Lexus generally, and especially on alloys, didn't have the best finishes up until perhaps gen3/4 models but my current one if anything, stands out for the excellent quality of finish so they've come a long way.

[Bezzer]

Had our 07 Rav4 Diamondbrited from new, never waxed or did anything else other than use Diamondbrite shampoo in the 16 years we owned it. Sold it to a cousin last year, still looks mint bodywise.

[Malc1]

Thank you 

Malc