No, it is not necessary. But there is such a tool as a shave. And they are not lying there for months to turn like mice.
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It is immediately apparent that the first quote (about shaving) was written by a man, or a very inexperienced girl.

I tell you:
1st If the hair on the legs from nature is thick and dark - shaving is enough for a day. And in three days there will already be "Mishkin’s legs".
2nd In Russian (especially children's) hospitals, the shower room available to patients and their parents may not be at all. Or it is available for 30 minutes a day, and during this time the whole department should be washed. Or two hours, but only twice a week - and the whole department should also have time. Or even two hours every day - but in the same room, children are put on enema, and, therefore, you need to catch such days in which no enema will be prescribed. Options are mass. Take your feet, I don’t want to.
Three You can stay stuck in the hospital for a month or more.
4 is When a woman has a small child (and no one lies with a 15-year-old teenager) and is severely ill (orticaria in hospitals is not treated, unless it is a 5-day baby) - here is, of course, the No. 1 problem in her life at this time - how to keep the product appearance. Thu, to you, I wish you (the author of the comment about shaving) never even try to reproduce.