Originally Posted by
veganbikes
Not necessarily but I wouldn't want to change my geo if I was comfortable on the bike and didn't want a more aggressive or upright position maybe. It is handy to keep in mind. I did almost swap a suspension fork both of 100mm travel but one had a significantly smaller A2C and it would have made my bike very aggressive in a way I didn't want.
On 100mm suspension after you account for sag you don't even notice the change in geometry. It's not significant enough to be noticeable. Now if it was 120mm I'd agree with you.