I do, but I've mained gauss and volt for a long time too, Saryn also to an extent, so his Firewalker buff + passive just isn't that noticeable to me, being only 25%. If it were affected by mods, say Ability Strength, it would only reach 4x its original value (100%) with a whopping 400% Ability Strength, so what I'm tryna say is that increasing it with mods would already be kind of hard unless you do meme 400% Strength build or something, so by the end of the day best I'd get is only 60% Firewalker (assuming it would be affected by Ability Strength). So as you can see, the buff increase wouldn't even be that big, so why not just make it official? Not like it hurts his other kit in any way, or not like the buff would be increased so much it would break him.
I didn't mean to compare them back to back like that, I was just replying to the previous person who replied first. Still, if anything, I'd say with her usual nuking build (high strength), her molt makes her go really really fast, which I feel already makes her faster than Nezha even with his passive combined. I may not be able to back this up with proper calculations on the speed buff of both, if someone else can I'd appreciate it.