In reply to Exile:
That makes the assumption that they were using the current guidebook. For example, I've just checked my old guide (Bennett & Birkett, 2nd Ed 1986) and the sensitivity of the flora isn't mentioned there. Even then they may not have the same level of awareness/knowledge as the OP or their judgement may differ a bit.
It may be worth adding a note to the specific route description on this site as well (it is only mentioned on the 'approach notes' to Great End, which some may not read if they already know their way).
Also worth linking to the BMC white guide (I'm a BMC member and wasn't aware of it until I read this thread and searched for it) https://www.thebmc.co.uk/lake-district-winter-conditions-guide