[Closed] Thule 591 v 561

I’ve currently got x 2 Thule 591’s.

However I’ve just got a new Orbea Rise that weighs in just over the 20kg weight limit. I’m not convinced the downy tube clamp will be big enough either , I’m also not convinced with all that weight high up too

A through axle rack (2nd hand) would appear the more sensible option , but am I missing something about bolting through the axle ? Does damage the fork?

Ta