You can apply this argument to basically any non “piss poor hobby artist makes this in freetime” piece of culture.
Of course blåhaj is a commodity produced by a large corporation. And almost any sufficieny large corporation will employ anti-union tactics. This is not surprising at all since it’s a necessity for corporations to act like this under capitalism.
I still like blåhaj because it brings some of my friends joy. That’s all.
I have not bought a single blåhaj from Ikea but I have hand-sewn and gifted away multiple ones, since they are a fun piece of queer culture and some of my friends love them.
You’d be surprised how much of pop-culture has historically been shaped by advertisement and marketing campaigns. Feel free to completely boycott these trends, be aware however that this level of ideological purism is at best ineffectual, and at worst highly isolating.
I for one like having fun at times and it has not changed my opinion on the necessity of abolishing capitalism in the slightest. I’m sorry for your cynicism.