I have a Litespeed Gravel (very similar in geo to the new Watia). Like others have said, I don’t particularly notice that Magic Carpet Ride™ quality on gravel, as tires dominate ride feel on rough surfaces. I can also vouch it’s not for weight weenies (with pedals, bottle cages, and a Shockstop stem it weighs in at 9.25kg). That said, it’s by far the most comfortable bike I’ve had for all-day rides.
An advantage of Ti I don’t believe has been mentioned yet is its durability. There’s a definite peace of mind while racing knowing the frame can take whatever beating you give it. My previous gravel bike (Salsa Vaya) had many chips, small dents, and paint rub from my frame bag. I get even rowdier with the Litespeed and it still looks like the day it arrived.