Grandparents don't understand!!

I feel like purées are just so traditional and what everyone "knows" to be the right way. 
I've tried explaining BLW weaning to my inlaws and my son's great-grandma, and they just don't get it!! 
They are like "You still need to mash it up". And I'm trying to educate them but they are impossible 🙄🙄🙄
Thank goodness we live nowhere near them, but I'm sick of having to explain and justify the way I am choosing to feed my son. First, they gave pushback about me being EBF and not supplementing with formula and now this.. I can't be alone.. 
Anybody??