It doesn't seem to be common knowledge/ taught much. It would seem that a very large number of pilots haven't been taught/ wouldn't think of making an allowance to predict for higher rod from this.
From memory (Covid has grounded my career), glidepath error is +0.1 degree glidepath per 5C above ISA. Therefore, at 150kts, ISA +20C will cause an increase of about 100fpm rod.
I once flew a 787 into Kilamanjaro: from memory, it had a published GP steeper than 3 degrees, the airport has high elevation (something like 3000'), and temperature was about 25. Tricky. "It's okay if it's briefed", right?