My stupis brother that keeps scolding my 2.5yr old..

Whenever i visit my mum at her house my brother (3yrs older than me, and a he's a huge pain in the ass) will be compelled to sort of give my toddler a hard time and i dont know why! My hubby and i try our best to raise our girl with manners and we do talk to her on how to behave when we are at people's house but surely there's a limit cos my girl is not good at expressing herself (verbally) which seems reasonable at her age right? For example if my daughter throws a soft toy towards my mum i would try to physically block her from throwing while saying something like "i cant let you throw that at grandma.. let's take a book and you can read with grandma".. my daughter really loves my mum and they get along fine bt my brother insists that i spoil her, i dont "discipline" her and stuff and he's being an ass now that i'm pregnant with number 2.. other examples are like trying to climb on furnitures (dangerous and we do try to guide her down safely) but there'd been a few times he just YELLED at her "dont climb!!!" my daughter looked so shocked and there were tears.. my hubby is starting to get so pissed at his attitude and we wonder why we gotta put up with this as we only come to visit twice a month. I always apologize if my daughter made a mess or spilled something. I feel like when my girl gets older like 4,5 yrs old she'll feel like she's a bad kid cos her uncle is nasty to her.. he says phrases like "dont throw! its not polite!". 😣😥