No, any high oily diet would do that veggie or not. Vegetarianism doesn't necessarily equal healthy food that's good for your gut, if your stool is genuinely greasy please examine your diet.

Apologies if this came off as attacking you I've just gotten up and could have written my initial comment to be less direct.

Sikh's are based, a genuinely lovely group they really do try to practice what they preach.

Change your diet.