Species is a social construct and debates like this prove it. People can’t agree what the line between different species is, because the line is socially constructed.
There is no scientific debate in what a species is you dingbat. Sexual reproduction is the qualifier. Anything below is up for additional qualification.
You’re being reductive, and I don’t think you believe the logical implications of what you’re saying. You don’t think horses are the same species as donkeys. And if you meant viable sexual reproduction, you shouldn’t have spoken so simply. Furthermore, your model rejects the speciation between homo sapiens and homo neandertalis, which is silly.