1a. It is intentional that servers do not fail and satellite calibrations do not decrease in Ambience mode.
1b. Power lines do swing in the wind in real life, although the effect has been increased in-game, presumably to draw more attention to the lines. Not everything has to be entirely physically accurate.
1c. The saw object currently has no actual use. To be able to destroy objects such as pallets, purchase a hacksaw from the store.
1d. The only type of can that doesn’t work to make metal scrap is the can from canned food and canned peaches. It should be easy to tell these cans apart, as inspecting them shows that they can be, or have been, eaten. Otherwise, cans named “empty can” or cans from the vending machine both count toward crafting metal scrap.
1e. The crafting book is not supposed to change as you learn new recipes, your learned recipes are listed in the inventory.
1f. You can easily reach the ceiling vent with the hook by jumping and throwing the end so that it attaches to the ceiling, scrolling the mouse wheel to pull yourself up, and then “grabbing” the vent cover. The speed at which you pull yourself up is the same as the speed you scroll, so scroll slowly to avoid slamming your head into the ceiling.
1g. Garbage that is stuck as a ball can still be moved by pushing it with another object, or by using the broom. If you successfully dislodge it, it should snap back to being a pile again. Garbage cannot get stuck to the ceiling, what you are seeing is just garbage on the floor above that clips through the floor and is visible on the ceiling.
2. If you have specific localization issues, it is recommended you report them on MrDrNose’s Discord.