1. Brands, especially designer brands, aren't actually becoming more inclusive.
Most brands just create hype. H&M for example, "expanded" their sizing. It wasn't really changed. They just made a 4 into a 6 and 10 into a 12 and so on.
In addition, most "designer" brands who cast AG or other plus size models don't really actually make plus size. Try going into Dior/YSL/Gucci/D&G and ask for a plus size item. It's not gonna happen.
2. Inclusivity doesn't actually solve the problem.
The main problem is healthy lifestyle and girls' self esteem. Instead of focusing on size, people should be focusing on health and telling girls to not compare themselves to models/celebrities/guys opinion.
3. It isn't kindness to tell plus size women that they are attractive IF you don't actually think that. And you don't have authority over what others think or say.
For example, if your grossly obese friend ask you if you think she is fat, it isn't kind to just say that she doesn't look fat. It is kinder to actually have the uncomfortable conversation. Because let's face it, when she goes outside of her comfort zone/friends/family, she will be criticized. It is kinder to let her know softly and work on a solution with her/him.
4. It isn't fair to force inclusivity out of brands that don't want to do it.
I'm going to use VS (Victoria Secret) here. If they don't want to target plus size, that is fine.
5. Victim mentality.
In addition, these plus size people claim that they are "oppressed". I'm sorry to inform them that they are not oppressed. Oppressed people don't have organizations and groups of people fighting for them. Oppressed people don't have specific stores catering to just their own needs.
Ant here is the biggest problem:
6. Those who push for inclusivity only push for selective inclusivity.
They say that they want inclusivity for everyone but only pick on certain brands. In general, they have no problem having straight-sized girls excluded from certain brands. For one, they have no problem with brands like Lane Bryant, Torrid etc, who do not offer products for smaller women. If you really wanted inclusivity for everyone, shouldn't you be made at these brands too?
In addition they have no problem buying bags/shoes /accessories from designer brands like Chanel and Gucci who don't support plus size. Hell, they will carry that Gucci bag with pride. They turn blind to the idea that its elite brands like Agent Provocateur, La Perla who charges $200+ on average for lingerie that are actually less inclusive. VS sells upto a 40 band, but Agent Provocateur and La Perla only often go to 38 (xs-L).
7. I don't think they'd actually care for brands that don't offer their size.
Here is why. Most plus size girls complain that plus size bras cost too much. I did the research and it costs, on average, around $20 to $70 (AdditionElle). I don't even think that plus size clothing costs that much- looking at brands like Forever21, H&M, Torrid, AdditionElle, Lane Bryant. My clothes actually costs the same.
And furthermore, even if Victoria Secret offered more plus size, I don't think that the price would be favourable enough for plus size shoppers to buy it. VS charges $40-70 for their current bras. Imagine how much they would charge for a plus size bra. They would be bankrupt. Besides, their number one priority is China, where people aren't plus size, so it's not a good move.
In all, I just don't think plus size girls have my back and I don't think they want real inclusivity.