I was referring back to my own previous comment at 09:52:03. I was being perfectly relevant to that, and not negative at all. However I am happy to be negative about an advert that shows someone sitting peeing. That may show my opinions as old-fashioned. Sorry about that, but I am what I am. I have had 84 years of "indoctrination" in what is good or bad taste to portray
On the subject of the ad described (which I have not seen) as distinct from the way it is illustrated, it is good advice, but there are other things that also help prevent UTIs.
Being old enough to lose interest in sex, or to lose a partner, makes a very large contribution. That hints at the importance of sexual and personal hygeine, for both partners, before and after the act, and of suitable lubrication. Too much sugar in the diet can encourage the growth of yeast and the infections that feeds, so can underwear that is tight and/or made of a non-absorbent material that doesn't allow the body to "breathe". If all these plus the "how to pee" advice still don't work, then finding the right medication for the individual could make a difference.