Why would you think an online seed seller, who sells hundreds of completely different plant seeds, which are not fresh and have just been shelved in storage for years, probably bought from someone else in wholesale, would have any idea what specific type of plant his seeds came from?
The seller probably never tried planting most of the seeds they are selling.
Many sellers also have no idea that citrus seeds rapidly lose viability in storage, despite selling those seeds.
From my experience, the maximum length of time citrus seeds can last, not refrigerated, but at cool temperatures, and kept from drying out, but not too moist that would encourage germination or rot, is about 5 or 6 weeks.
That doesn't exactly make citrus seeds economical for a bulk seed seller, especially one that primarily sells other types of seeds.