why is speciesism important for Singer’s animal rights view?

Have you read Singer's argument?

https://www.utilitarian.net/singer/by/1979----.htm

To understand why speciesism is important for Singer's animal rights view, we need to grasp the concept of speciesism itself. Speciesism refers to the discriminatory treatment of individuals based on their specific species membership. In other words, it involves giving different moral worth to different species without sufficient justification.

According to Singer, speciesism is significant because it is the primary obstacle to granting animals equal consideration of their interests. Singer argues that our tendency to prioritize the interests of humans over those of animals is arbitrary and unjustifiable. He believes that the principle of equal consideration of interests should apply to all beings capable of experiencing pleasure or suffering, regardless of their species.

Singer's argument rests on the idea that species membership alone should not determine the moral worth or the rights one possesses. Instead, he suggests that we should consider an individual's capacity for sentience, their ability to experience pleasure or pain, as the basis for moral consideration. This means that animals, being sentient beings, should be afforded rights and equal consideration of their interests just like humans.

By highlighting the problem of speciesism, Singer aims to draw attention to the inconsistencies and biases in our treatment of animals. He challenges the notion that humans are inherently superior to animals and argues for a more inclusive ethical framework that encompasses all sentient beings.