They are more likely to be deformed by a small amount of pressure when removing stuck resin. The old scraper (sharp corners) that was originally shipped with the Cleaning Kit is to be avoided even for stirring the resin. The new scrapper (rounded corners) which I received with the Wash and which MAY be part of newly bought Cleaning Kits work well.
For removing stuck prints, gloves and nails works way better than the scrapper to avoid damaging the tank. A hard-ish silicone spatula may also work.
In general, and as said by Formlabs on the forums : LT has a huge lifetime but it is best used by experienced people and/or on prints which have already been tested or with safe parameters. I personally use LT with Tough resin because we print production parts in this material and I want the longer lifetime, but I keep a standard tank for “very risky” Tough prints to avoid having to mess up the LT one.
So far I am very satisfied with the LT tank. Tested with Tough, Grey Pro and Rigid the results were great and the longevity with Tough seems to be outstanding : I can print the same file over and over again without having to move the parts around and have so far not seen any quality degradation.