Really old urinals don't splash back. The engineers have spent the last 50yr trying to reduce water usage and material usage without making the product "notice

Really old urinals don't splash back. The engineers have spent the last 50yr trying to reduce water usage and material usage without making the product "noticeably" worse. Of course you add up 50yr of "it's 99% as good on our test, nobody will notice" and you get some degradation.