When there’s a problem with a tile installation it’s typically the tile installers that are blamed.
The product manufacturers will say installation constitutes acceptance. This is the standard response, unless there was a concealed defect that you could not have known about.
The architect, designer or homeowner will say “you didn’t follow specifications” and/or “you should have followed industry standards” and/or “you’re the professional so you should have known better!”
So an installer’s best defense is offense. Make sure you follow the manufacturers’ directions. Inspect the materials you’re using before installing them and if you find a problem, STOP! Don’t continue the installation until the problem is resolved. Make sure you follow industry standards for the use and installation of the tile products.