There's a difference between using manga as primary canon and only using anime when it doesn't contradict vs using only manga canon. Yes it has some inconsistencies and some drag outs (Luffy vs Urashima was dragged the hell out), but timeframes shouldn't be an issue
minimum.
Like the swinging speed
here, are we really going to cut the speed and a perfectly fine timeframe that
isn't dragged out all because Red Leg Zeff lost his leg 2 different ways?
For One Piece, if it contradicts, then it shouldn't be used, but if it doesn't contradict, then it should be used.
Fujitora's statement about bending space. It wasn't stated in the manga, so it can't be used, Simple.
Sanji's lightspeed statement via the narrator. It wasn't shown in the manga, so it can't be used, simple.
Mont D'or's ability was shown to be
slightly different in the anime than the manga, cut it out, can't be used, simple.
Linlin and Kaido clash and it splits the clouds. It happened in the manga exactly the same, so it can be used, simple.
We don't need to cut out an entire
adaptation all because children watch it and they don't want to make it a Seinen anime.
Anime timeframes have always been fine and are always better than assumed random timeframes
Exactly.
It's better to use what's given to us that even has 1% of involvement from the author than using our own personal headcanon on feats. Anime says .1 second, Oda doesn't say "drag this out, it contradicts too much with my work",