Is it safe to use rock salt instead of iodized salt for daily consumption? if so what are the advantages?

Probably minimal: Iodine was originally added to salt as a way to combat wide spread iodine deficiency. Most folks get plenty of it in their diets now a days. So using rock salt or sea salt with no iodine added is mostly a matter of what you think tastes better. Most relatively healthy us citizens get plenty of iodine in their diets now a days so it is usually not an issue what you personally choose.

It is possible: No advantage whatsoever. None of the "specialty salts" have any benefit over purified table salt.

Get your iodine: There's no shortage of iodine in the usa, because the salt is iodized. Much of europe is still iodine-deficient thanks to crank opposition to this public-health measure, which is one of the most valuable and effective in history, especially in preventing lifelong brain damage. If for some reason somebody has told you to "avoid iodized salt", you're being deceived.