Of course you can grill veggies and alternatives, but grilling is such a meat culture.
Considering BBQs are either a status symbol or a necessity that is dirt-cheap while also lasting quite long, I don’t think any non-premium company is in it for the sales. It’s a side business they do.
Sure, high-end BBQs are a different thing. But they sell as part of furnishing a house, not as part of your diet.
All the vegans I know own grills.
I’m grilling for my family all the time. All vegan. My son loves grilled corn, and there’s plenty of plant based burgers and hot dogs.
The Hearth, Patio, and Bbq Assoc. said that in 2021, 70% of American homes (i know that’s not the world, but it’s where the study was) owned a grill. That’s up from 64% in 2019. So, no, not declining.