OK, that's just silly.
Any tire works with Stan's setup, so run whatever you want. the Tubeless tire ready only comment confused me.
it's not really that silly, it's much much cheaper than the stans kit and works pretty much just as well.
Kenda does not endorse the use of any fluid-based sealant products in any Kenda tube-type or tubeless-type tires. Use of any fluid-based products will void any warranty claims.
What happens is sometimes the stans will create a blister between plies and you'll have a large hump in your tire. You can use a syringe to remove it from the inside but now you have separation of plies. Most cases of this happening is when a tire sits with stans in it for a long time.