delayTimerless() implementation

I noted that the standard delay() function is dependent on a timer and its corresponding interrupt on most Arduino microcontrollers and therefore, any interrupt which occurs during execution of delay() will be serviced only when delay() has finished executing, so can I recommend implementing delayTimerless() which is not dependent on a timer and its corresponding interrupt noting a few cautions regarding inaccuracy?

void delayTimerless(word value) {
for (word i = 0; i < value; i++) {
delayMicroseconds(1000);
}
}

The issue names delay() and delayMicroseconds() but no file or test. Start by locating their Arduino core implementations and checking how timer interrupts affect them. Done means determining whether a timer-independent delay API is appropriate, including its accuracy cautions, and adding the relevant validation or documentation.

Written by the indexing model from the issue text.